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Physical Review Letters[JOURNAL]

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Persistence of the Berezinskii-Kosterlitz-Thouless Transition with Long-Range Couplings.

Walther L, Willsher J, Knolle J

Phys Rev Lett · 2026 Jun · PMID 42330473 · Publisher ↗

The Berezinskii-Kosterlitz-Thouless (BKT) transition is an archetypal example of a topological phase transition, which is driven by the proliferation of vortices. In this Letter, we analyze the persistence of the BKT tra... The Berezinskii-Kosterlitz-Thouless (BKT) transition is an archetypal example of a topological phase transition, which is driven by the proliferation of vortices. In this Letter, we analyze the persistence of the BKT transition in the XY model under the influence of long-range algebraically decaying interactions of the form ∼1/r^{2+σ}. The model hosts a magnetized low temperature phase for sufficiently small σ. Crucially, in the presence of long-range interactions, spin waves renormalize the interaction between vortices, which stabilizes the BKT transition. As a result, we find that there is no direct transition from the magnetized to the disordered phase and that the BKT transition persists for arbitrary long-range exponents, which is distinct from previous results. The key methodological advance is the inclusion of coupling between spin wave and topological excitations. We do this by developing Landau-Peierls-type arguments and using higher-order renormalization group calculations, obtaining compatible results. We emphasize that Landau-Peierls-type arguments are a powerful tool for analyzing continuous spin models. We discuss the relevance of our findings for current Rydberg atom experiments, and highlight the importance of long-range couplings for other types of topological defects.
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Programmable Assembly of Ground State Fermionic Tweezer Arrays.

Jain N, Zhang J, Culemann M … +1 more , Preiss PM

Phys Rev Lett · 2026 Jun · PMID 42330472 · Publisher ↗

We demonstrate deterministic preparation of arbitrary two-component product states of fermionic ^{6}Li atoms in an 8×8 optical tweezer array, achieving motional ground-state fidelities above 98.5%. Leveraging the large d... We demonstrate deterministic preparation of arbitrary two-component product states of fermionic ^{6}Li atoms in an 8×8 optical tweezer array, achieving motional ground-state fidelities above 98.5%. Leveraging the large differential magnetic moments for spin-resolution, with parallelized site- and number-resolved control, our approach addresses key challenges for low-entropy quantum state engineering. Combined with high-fidelity spin-, site-, and density-resolved readout within a single 20  μs exposure, and 3 s experimental cycles, these advances establish a fast, scalable, and programmable architecture for fermionic quantum simulation.
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Nanoscale Femtosecond Coherent Radiation and Spatiotemporally Shaped Free Electron Wave Function.

Wen W, Li J, Liu Y

Phys Rev Lett · 2026 Jun · PMID 42330471 · Publisher ↗

We study tunable, nanoscale, femtosecond coherent radiation based on a coupled nanowire pair structure, which is transversely excited by a strong, linearly polarized laser pulse. The structure can function as a nanoscale... We study tunable, nanoscale, femtosecond coherent radiation based on a coupled nanowire pair structure, which is transversely excited by a strong, linearly polarized laser pulse. The structure can function as a nanoscale undulator: the electrons moving through the nanogap are driven by a spatially periodic, transverse optical near field. We show that the near field can actively shape the electron wave function by inducing both a periodic oscillation and a quantum squeezing of its width. We then validate this theoretical framework by numerically solving the relativistically corrected time-dependent Schrödinger equation. The generated femtosecond pulse trains can be spectrally, temporally, and spatially controlled. This framework establishes the transverse optical near-field interaction as a novel mechanism for spatiotemporally shaping electron wave functions, thereby illuminating a path to a versatile platform for an on-chip femtosecond coherent light source and applications in free-electron quantum optics.
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Measurement of the Top-Quark Production Cross Section and Charge Asymmetry at LHCb.

Aaij R, Abdelmotteleb ASW, Abellan Beteta C … +1196 more , Abudinén F, Ackernley T, Adefisoye AA, Adeva B, Adinolfi M, Adlarson P, Agapopoulou C, Aidala CA, Ajaltouni Z, Akar S, Akiba K, Akthar M, Albicocco P, Albrecht J, Aleksiejunas R, Alessio F, Alvarez Cartelle P, Amalric R, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreola P, Andreotti M, Andres Estrada S, Anelli A, Ao D, Arata C, Archilli F, Areg Z, Argenton M, Arguedas Cuendis S, Arnone L, Artamonov A, Artuso M, Aslanides E, Ataíde Da Silva R, Atzeni M, Audurier B, Authier JA, Bacher D, Bachiller Perea I, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Balboni A, Baldini W, Baldwin Z, Balzani L, Bao H, Baptista de Souza Leite J, Barbero Pretel C, Barbetti M, Barbosa IR, Barlow RJ, Barnyakov M, Barsuk S, Barter W, Bartz J, Bashir S, Batsukh B, Battista PB, Bavarchee A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga IB, Behling NA, Belin S, Bellavista A, Belous K, Belov I, Belyaev I, Benane G, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Bernet Andres S, Bertolin A, Betti F, Bex J, Bezshyyko O, Bhattacharya S, Bieker MS, Biesuz NV, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Blake T, Blanc F, Blank JE, Blusk S, Bocharnikov V, Boelhauve JA, Boente Garcia O, Boettcher T, Bohare A, Boldyrev A, Bolognani C, Bolzonella R, Bonacci RB, Bondar N, Bordelius A, Borgato F, Borghi S, Borsato M, Borsuk JT, Bottalico E, Bouchiba SA, Bovill M, Bowcock TJV, Boyer A, Bozzi C, Brandenburg JD, Brea Rodriguez A, Breer N, Brodzicka J, Brown J, Brundu D, Buchanan E, Burgos Marcos M, Burr C, Buti C, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Cai Y, Caillet A, Calabrese R, Calefice L, Calvi M, Calvo Gomez M, Camargo Magalhaes P, Cambon Bouzas JI, Campana P, Campos AC, Campoverde Quezada AF, Cao Y, Capelli S, Caporale M, Capriotti L, Caravaca-Mora R, Carbone A, Carcedo Salgado L, Cardinale R, Cardini A, Carniti P, Carus L, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Cavallini V, Celani S, Celestino I, Cesare S, Chadwick AJ, Chahrour I, Chang H, Charles M, Charpentier P, Chatzianagnostou E, Cheaib R, Chefdeville M, Chen C, Chen J, Chen S, Chen Z, Chen Hu A, Cherif M, Chernov A, Chernyshenko S, Chiotopoulos X, Chobanova V, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cid Vidal X, Ciezarek G, Cifra P, Clarke PEL, Clemencic M, Cliff HV, Closier J, Cocha Toapaxi C, Coco V, Cogan J, Cogneras E, Cojocariu L, Collaviti S, Collins P, Colombo T, Colonna M, Comerma-Montells A, Congedo L, Connaughton J, Contu A, Cooke N, Cordova G, Coronel C, Corredoira I, Correia A, Corti G, Cottee Meldrum J, Couturier B, Craik DC, Cruz Torres M, Cubero Campos M, Curras Rivera E, Currie R, Da Silva CL, Dadabaev S, Dai X, Dall'Occo E, Dalseno J, D'Ambrosio C, Daniel J, Darze G, Davidson A, Davies JE, De Aguiar Francisco O, De Angelis C, De Benedetti F, de Boer J, De Bruyn K, De Capua S, De Cian M, De Freitas Carneiro Da Graca U, De Lucia E, De Miranda JM, De Paula L, De Serio M, De Simone P, De Vellis F, de Vries JA, Debernardis F, Decamp D, Dekkers S, Del Buono L, Delaney B, Deng J, Denysenko V, Deschamps O, Dettori F, Dey B, Di Nezza P, Diachkov I, Didenko S, Ding S, Ding Y, Dittmann L, Dobishuk V, Docheva AD, Doheny A, Dong C, Dordei F, Dos Reis AC, Dowling AD, Dreyfus L, Duan W, Duda P, Dufour L, Duk V, Durante P, Duras MM, Durham JM, Durmus OD, Dziurda A, Dzyuba A, Easo S, Eckstein E, Egede U, Egorychev A, Egorychev V, Eisenhardt S, Ejopu E, Eklund L, Elashri M, Elizondo Blanco D, Ellbracht J, Ely S, Ene A, Eschle J, Evans T, Fabiano F, Faghih S, Falcao LN, Fang B, Fantechi R, Fantini L, Faria M, Farmer K, Fassin F, Fazzini D, Felkowski L, Feng C, Feng M, Fernandez Casani A, Fernandez Gomez M, Fernez AD, Ferrari F, Ferreira Rodrigues F, Ferrillo M, Ferro-Luzzi M, Filippov S, Fini RA, Fiorini M, Firlej M, Fischer KL, Fitzgerald DS, Fitzpatrick C, Fiutowski T, Fleuret F, Fomin A, Fontana M, Foreman LA, Forty R, Foulds-Holt D, Franco Lima V, Franco Sevilla M, Frank M, Franzoso E, Frau G, Frei C, Friday DA, Fu J, Führing Q, Fulghesu T, Galati G, Galati MD, Gallas Torreira A, Galli D, Gambetta S, Gandelman M, Gandini P, Ganie B, Gao H, Gao R, Gao TQ, Gao Y, Gao Y, Gao Y, Garcia Martin LM, Garcia Moreno P, García Pardiñas J, Gardner P, Garrido L, Gaspar C, Gavrikov A, Gerken LL, Gersabeck E, Gersabeck M, Gershon T, Ghizzo S, Ghorbanimoghaddam Z, Giasemis FI, Gibson V, Giemza HK, Gilman AL, Giovannetti M, Gioventù A, Girardey L, Giza MA, Glaser FC, Gligorov VV, Göbel C, Golinka-Bezshyyko L, Golobardes E, Golubkov D, Golutvin A, Gomez Fernandez S, Gomulka W, Goncalves Abrantes F, Gonçales Vaz I, Goncerz M, Gong G, Gooding JA, Gorelov IV, Gotti C, Govorkova E, Grabowski JP, Granado Cardoso LA, Graugés E, Graverini E, Grazette L, Graziani G, Grecu AT, Grieser NA, Grillo L, Gromov S, Gu C, Guarise M, Guerry L, Guseinov AK, Gushchin E, Guz Y, Gys T, Habermann K, Hadavizadeh T, Hadjivasiliou C, Haefeli G, Haen C, Haken S, Hallett G, Hamilton PM, Hammerich J, Han Q, Han X, Hansmann-Menzemer S, Hao L, Harnew N, Harris TJ, Hartmann M, Hashmi S, He J, Heatley N, Hedes A, Hemmer F, Henderson C, Henderson R, Henderson RDL, Hennequin AM, Hennessy K, Henry L, Herd J, Herrero Gascon P, Heuel J, Heyn A, Hicheur A, Hijano Mendizabal G, Horswill J, Hou R, Hou Y, Houston DC, Howarth N, Hu W, Hu X, Hulsbergen W, Hunter RJ, Hushchyn M, Hutchcroft D, Idzik M, Ilin D, Ilten P, Iniukhin A, Iohner A, Ishteev A, Ivshin K, Jage H, Jaimes Elles SJ, Jakobsen S, Jakoubek T, Jans E, Jashal BK, Jawahery A, Jayaweera C, Jelavic A, Jevtic V, Jia Z, Jiang E, Jiang X, Jiang Y, Jiang YJ, Jimenez Moya E, Jindal N, John M, John Rubesh Rajan A, Johnson D, Jones CR, Joshi S, Jost B, Juan Castella J, Jurik N, Juszczak I, Kalecinska K, Kaminaris D, Kandybei S, Kane M, Kang Y, Kar C, Karacson M, Kauniskangas A, Kautz JW, Kazanecki MK, Keizer F, Kenzie M, Ketel T, Khanji B, Kharisova A, Kholodenko S, Khreich G, Kiraz F, Kirn T, Kirsebom VS, Klaver S, Kleijne N, Kleimenova A, Klekots DK, Klimaszewski K, Kmiec MR, Knospe T, Kolb R, Koliiev S, Kolk L, Konoplyannikov A, Kopciewicz P, Koppenburg P, Korchin A, Kostiuk I, Kot O, Kotriakhova S, Kowalczyk E, Kozachuk A, Kravchenko P, Kravchuk L, Kravcov O, Kreps M, Krokovny P, Krupa W, Krzemien W, Kshyvanskyi O, Kubis S, Kucharczyk M, Kudryavtsev V, Kulikova E, Kupsc A, Kushnir V, Kutsenko B, Kvapil J, Kyryllin I, Lacarrere D, Laguarta Gonzalez P, Lai A, Lampis A, Lancierini D, Landesa Gomez C, Lane JJ, Lanfranchi G, Langenbruch C, Langer J, Latham T, Lazzari F, Lazzeroni C, Le Gac R, Lee H, Lefèvre R, Leflat A, Legotin S, Lehuraux M, Lemos Cid E, Leroy O, Lesiak T, Lesser ED, Leverington B, Li A, Li C, Li C, Li H, Li J, Li K, Li L, Li P, Li PR, Li Q, Li T, Li T, Li Y, Li Y, Li Y, Lian Z, Liang Q, Liang X, Liang Z, Libralon S, Lightbody A, Lin C, Lin T, Lindner R, Linton H, Litvinov R, Liu D, Liu FL, Liu G, Liu K, Liu S, Liu W, Liu Y, Liu Y, Liu YL, Loachamin Ordonez G, Lobo I, Lobo Salvia A, Loi A, Long T, Lopes FCL, Lopes JH, Lopez Huertas A, Lopez Iribarnegaray C, López Soliño S, Lu Q, Lucarelli C, Lucchesi D, Lucio Martinez M, Luo Y, Lupato A, Luppi E, Lynch K, Lyu S, Lyu XR, Ma GM, Ma H, Maccolini S, Machefert F, Maciuc F, Mack B, Mackay I, Mackey LM, Madhan Mohan LR, Madurai MJ, Magdalinski D, Maisuzenko D, Malczewski JJ, Malde S, Malentacca L, Malinin A, Maltsev T, Manca G, Mancinelli G, Mancuso C, Manera Escalero R, Manganella FM, Manuzzi D, Marangotto D, Marchand JF, Marchevski R, Marconi U, Mariani E, Mariani S, Marin Benito C, Marks J, Marshall AM, Martel L, Martelli G, Martellotti G, Martinazzoli L, Martinelli M, Martinez Gomez D, Martinez Santos D, Martinez Vidal F, Martorell I Granollers A, Massafferri A, Matev R, Mathad A, Matiunin V, Matteuzzi C, Mattioli KR, Mauri A, Maurice E, Mauricio J, Mayencourt P, Mazorra de Cos J, Mazurek M, Mazzanti Tarancon D, McCann M, McHugh NT, McNab A, McNulty R, Meadows B, Melnychuk D, Mendoza Granada D, Menendez Valdes Perez P, Meng FM, Merk M, Merli A, Meyer Garcia L, Miao D, Miao H, Mikhasenko M, Milanes DA, Minotti A, Minucci E, Miralles T, Mitreska B, Mitzel DS, Mocanu R, Modak A, Moeser L, Moise RD, Molina Cardenas EF, Mombächer T, Monk M, Monnard T, Monteil S, Morcillo Gomez A, Morello G, Morello MJ, Morgenthaler MP, Moro A, Moron J, Morren W, Morris AB, Morris AG, Mountain R, Mu Z, Muhammad E, Muheim F, Mulder M, Müller K, Muñoz-Rojas F, Mytrochenko V, Naik P, Nakada T, Nandakumar R, Napoletano G, Nasteva I, Needham M, Nekrasova E, Neri N, Neubert S, Neufeld N, Neustroev P, Nicolini J, Nicotra D, Niel EM, Nikitin N, Nisi L, Niu Q, Njoki BK, Nogarolli P, Nogga P, Normand C, Novoa Fernandez J, Nowak G, Nunez C, Nur HN, Oblakowska-Mucha A, Obraztsov V, Oeser T, Okhotnikov A, Okhrimenko O, Oldeman R, Oliva F, Olivart Pino E, Olocco M, O'Neil RH, Ordonez Soto JS, Osthues D, Otalora Goicochea JM, Owen P, Oyanguren A, Ozcelik O, Paciolla F, Padee A, Padeken KO, Pagare B, Pajero T, Palano A, Palini L, Palutan M, Pan C, Pan X, Panebianco S, Paniskaki S, Panshin G, Paolucci L, Papanestis A, Pappagallo M, Pappalardo LL, Pappenheimer C, Parkes C, Parmar D, Passaleva G, Passaro D, Pastore A, Patel M, Patoc J, Patrignani C, Paul A, Pawley CJ, Pellegrino A, Peng J, Peng X, Pepe Altarelli M, Perazzini S, Pereima D, Pereira Da Costa H, Pereira Martinez M, Pereiro Castro A, Perez C, Perret P, Perrevoort A, Perro A, Peters MJ, Petridis K, Petrolini A, Pezzulo S, Pfaller JP, Pham H, Pica L, Piccini M, Piccolo L, Pietrzyk B, Pietrzyk G, Pilato RN, Pinci D, Pisani F, Pizzichemi M, Placinta VM, Plo Casasus M, Poeschl T, Polci F, Poli Lener M, Poluektov A, Polukhina N, Polyakov I, Polycarpo E, Ponce S, Popov D, Popp K, Poslavskii S, Prasanth K, Prouve C, Provenzano D, Pugatch V, Puicercus Gomez A, Punzi G, Pybus JR, Qian Q, Qian W, Qin N, Quagliani R, Rabadan Trejo RI, Racz R, Rademacker JH, Rama M, Ramírez García M, Ramos De Oliveira V, Ramos Pernas M, Rangel MS, Ratnikov F, Raven G, Rebollo De Miguel M, Redi F, Reich J, Reiss F, Ren Z, Resmi PK, Ribalda Galvez M, Ribatti R, Ricart G, Riccardi D, Ricciardi S, Richardson K, Richardson-Slipper M, Riehn F, Rinnert K, Robbe P, Robertson G, Rodrigues E, Rodriguez Alvarez A, Rodriguez Fernandez E, Rodriguez Lopez JA, Rodriguez Rodriguez E, Roensch J, Rogachev A, Rogovskiy A, Rolf DL, Roloff P, Romanovskiy V, Romero Vidal A, Romolini G, Ronchetti F, Rong T, Rotondo M, Rudolph MS, Ruiz Diaz M, Ruiz Fernandez RA, Ruiz Vidal J, Saavedra-Arias JJ, Saborido Silva JJ, Sacha Emile R SER, Sagidova N, Sahoo D, Sahoo N, Saitta B, Salomoni M, Sanderswood I, Santacesaria R, Santamarina Rios C, Santimaria M, Santoro L, Santovetti E, Saputi A, Saranin D, Sarnatskiy A, Sarpis G, Sarpis M, Satriano C, Satta A, Saur M, Savrina D, Sazak H, Sborzacchi F, Scarabotto A, Schael S, Scherl S, Schiller M, Schindler H, Schmelling M, Schmidt B, Schmidt N, Schmitt S, Schmitz H, Schneider O, Schopper A, Schulte N, Schune MH, Schwering G, Sciascia B, Sciuccati A, Scriven G, Segal I, Sellam S, Semennikov A, Senger T, Senghi Soares M, Sergi A, Serra N, Sestini L, Sevilla Sanjuan B, Shang Y, Shangase DM, Shapkin M, Sharma RS, Shchemerov I, Shchutska L, Shears T, Shekhtman L, Shen J, Shen Z, Sheng S, Shevchenko V, Shi B, Shi J, Shi Q, Shi WS, Shimizu Y, Shmanin E, Shorkin R, Silva Coutinho R, Simi G, Simone S, Singha M, Siral I, Skidmore N, Skwarnicki T, Slater MW, Smith E, Smith M, Soares Lavra L, Sokoloff MD, Soler FJP, Solomin A, Solovev A, Solovieva K, Sommerfeld NS, Song R, Song Y, Song Y, Song YS, Souza De Almeida FL, Souza De Paula B, Sowa KM, Spadaro Norella E, Spedicato E, Speer JG, Spradlin P, Stagni F, Stahl M, Stahl S, Stanislaus S, Stefaniak M, Steinkamp O, Strekalina D, Su Y, Suljik F, Sun J, Sun J, Sun L, Sundfeld D, Sutcliffe W, Svihra P, Svintozelskyi V, Swientek K, Swystun F, Szabelski A, Szumlak T, Tan Y, Tang Y, Tang YT, Tat MD, Teijeiro Jimenez JA, Terentev A, Terzuoli F, Teubert F, Thomas E, Thompson DJD, Thomson-Strong AR, Tilquin H, Tisserand V, T'Jampens S, Tobin M, Todorov TT, Tomassetti L, Tonani G, Tong X, Tork T, Toscano L, Tou DY, Trippl C, Tuci G, Tuning N, Uecker LH, Ukleja A, Unverzagt DJ, Upadhyay A, Urbach B, Usachov A, Ustyuzhanin A, Uwer U, Vagnoni V, Vaitkevicius A, Valcarce Cadenas V, Valenti G, Valls Canudas N, van Eldik J, Van Hecke H, van Herwijnen E, Van Hulse CB, Van Laak R, van Veghel M, Vasquez G, Vazquez Gomez R, Vazquez Regueiro P, Vázquez Sierra C, Vecchi S, Velilla Serna J, Velthuis JJ, Veltri M, Venkateswaran A, Verdoglia M, Vesterinen M, Vetens W, Vico Benet D, Vidrier Villalba P, Vieites Diaz M, Vilasis-Cardona X, Vilella Figueras E, Villa A, Vincent P, Vivacqua B, Volle FC, Vom Bruch D, Voropaev N, Vos K, Vrahas C, Wagner J, Walsh J, Walton EJ, Wan G, Wang A, Wang B, Wang C, Wang G, Wang H, Wang J, Wang J, Wang J, Wang J, Wang M, Wang NW, Wang R, Wang X, Wang X, Wang XW, Wang Y, Wang Y, Wang YH, Wang Z, Wang Z, Ward JA, Waterlaat M, Watson NK, Websdale D, Wei Y, Weida Z, Wendel J, Westhenry BDC, White C, Whitehead M, Whiter E, Wiederhold AR, Wiedner D, Wiegertjes MA, Wild C, Wilkinson G, Wilkinson MK, Williams M, Williams MJ, Williams MRJ, Williams R, Williams S, Williams Z, Wilson FF, Winn M, Wislicki W, Witek M, Witola L, Wolf T, Wood E, Wormser G, Wotton SA, Wu H, Wu J, Wu X, Wu Y, Wu Z, Wyllie K, Xian S, Xiang Z, Xie Y, Xing TX, Xu A, Xu L, Xu M, Xu Z, Xu Z, Xu Z, Yadav S, Yang K, Yang X, Yang Y, Yang Y, Yang Z, Yeung H, Yin H, Yin X, Yu CY, Yu J, Yuan X, Yuan Y, Zamora Saa JA, Zavertyaev M, Zdybal M, Zenesini F, Zeng C, Zeng M, Zhang C, Zhang D, Zhang J, Zhang L, Zhang R, Zhang S, Zhang SL, Zhang Y, Zhang YZ, Zhang Z, Zhao Y, Zhelezov A, Zheng SZ, Zheng XZ, Zheng Y, Zhou T, Zhou X, Zhovkovska V, Zhu LZ, Zhu X, Zhu X, Zhu Y, Zhukov V, Zhuo J, Zuliani D, Zunica G, LHCb Collaboration

Phys Rev Lett · 2026 Jun · PMID 42330470 · Publisher ↗

The first measurements of the top- and antitop-quark differential production cross sections and the top-quark charge asymmetry in the forward region are presented, using proton-proton collision data collected by the LHCb... The first measurements of the top- and antitop-quark differential production cross sections and the top-quark charge asymmetry in the forward region are presented, using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.4  fb^{-1}. The total production cross sections of top and antitop quarks are also determined. Measurements are performed using the μ+b-jet final state within a fiducial region defined by b-jet p_{T,jet}>50  GeV and pseudorapidity 2.2<η_{jet}<4.0, with the muon from the W-boson decay required to have p_{T,μ}>25  GeV and 2.0<η_{μ}<4.5. The muon and b-jet system must satisfy p_{T}(μ+jet)>20  GeV. The measured integrated production cross sections for the top and antitop quarks are σ_{t}=0.95±0.04±0.08±0.02  pb, σ_{t[over ¯]}=0.81±0.03±0.07±0.02  pb, where the first uncertainty is statistical, the second systematic, and the third accounts for the luminosity uncertainty. The top-quark charge asymmetry is measured to be A_{C}^{t}=0.08±0.03±0.01, where the first uncertainty is statistical and the second is systematic. These results are consistent with next-to-leading order Standard Model predictions.
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Benchmark Calculations of Charge State Distributions and Radiative Properties of Gold Plasmas in ICF Hohlraums.

Li Y, Gao C, Hou Y … +3 more , Jin F, Zeng J, Yuan J

Phys Rev Lett · 2026 Jun · PMID 42330469 · Publisher ↗

Accurate ionization balance of gold plasmas in nonlocal thermodynamic equilibrium is essential for understanding the physics involved in inertial confinement fusion (ICF) hohlraums, where the persistent "drive deficit" i... Accurate ionization balance of gold plasmas in nonlocal thermodynamic equilibrium is essential for understanding the physics involved in inertial confinement fusion (ICF) hohlraums, where the persistent "drive deficit" issue may stem from an overestimation of the emission and absorption opacity of gold plasmas. Predicting the charge state distribution (CSD) of gold plasmas at temperatures of several keV poses considerable challenges as the ionization stages with open N and M shells are predominantly populated. In this study, we performed benchmark calculations for the CSD of gold plasmas at extremely high temperatures up to 8 keV. We used a rate equation based on the relativistic configuration approximation, taking into account electronic configurations with electron excitations up to a principal quantum number of n=12, resulting in over 10 million atomic states, which have not been previously achieved. A Monte Carlo algorithm was developed to efficiently solve these large-scale rate equations under the steady-state approach. By carefully considering the highly excited atomic states, we achieved convergence in the CSDs. The highly excited atomic states with maximum principal quantum numbers n=8-12 provide crucial dielectronic recombination channels and have a substantial impact on the ionization balance at a temperature of 8 keV and an electron density of 10^{21}  cm^{-3}. This research lays the groundwork for accurately determining CSDs of gold plasmas in ICF hohlraums, contributing to a better understanding of the physical origins of the "drive deficit" problem.
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One-Jettiness Distribution Contains Super-Super-Leading Logarithms.

Banfi A, Forshaw JR, Holguin J

Phys Rev Lett · 2026 Jun · PMID 42330468 · Publisher ↗

We show that one-jettiness (τ_{1}) in color-singlet plus jet production suffers from superleading logarithms starting at order α_{s}^{4}ln(1/τ_{1})^{6} relative to the Born level. This is one logarithm more dominant than... We show that one-jettiness (τ_{1}) in color-singlet plus jet production suffers from superleading logarithms starting at order α_{s}^{4}ln(1/τ_{1})^{6} relative to the Born level. This is one logarithm more dominant than any previously identified superleading logarithms. The extra logarithm is not associated with additional poles, and is therefore consistent with the factorization of universal parton distribution functions at scale τ_{1}Q, where Q is the hard scale.
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Unveiling Spin and Poynting Dual Textures of an Optical Skyrmionic Tube in Free Space.

Wang S, Zhou Z, Zhu Y … +10 more , Sun J, Mao J, Wang M, Song S, Deng ZL, Cao Y, Qin F, Wu Y, Ren X, Li X

Phys Rev Lett · 2026 Jun · PMID 42330467 · Publisher ↗

Optical skyrmions are topological textures of electromagnetic fields with promising applications in information processing, transport, and storage. Exquisitely tailoring the optical fields of diverse physical quantities... Optical skyrmions are topological textures of electromagnetic fields with promising applications in information processing, transport, and storage. Exquisitely tailoring the optical fields of diverse physical quantities has expanded the family of skyrmions, yet such skyrmions only exhibit a single-quantity texture in free space. Herein, dual skyrmionic textures concurrently portraying spin and Poynting vectors are unveiled in the tight focus of an annular second-order circularly polarized vortex beam. The focal electric and magnetic fields exhibit an elongated and identical spatial distribution but a phase difference of π/2, leading to dual skyrmionic textures with vector orientations that are either opposite or identical, depending on the handedness of the incident beam. Unlike conventional optical skyrmions that are exclusively regarded as quasiparticles distributed in a two-dimensional plane, a skyrmionic tube structure that extends over a longitudinal depth approaching 10λ while preserving its topology is demonstrated. Our Letter enhances the comprehensiveness of optical skyrmions and paves the way toward their practical applications by bolstering skyrmion-matter interactions.
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N=8 Shell Breaking in ^{12}Be from a Single-Particle Perspective.

Chen J, Kay BP, Sharp DK … +32 more , Gaffney LP, Freeman SJ, Wang SM, Li JG, MacGregor PT, Hoffman CR, Ayyad Y, Butler PA, Carollo S, Ceulemans A, Clarke DJ, Dolan AJ, Everett C, Favier Z, Garrett K, Geng J, Jayatissa H, Labiche M, Lazarus I, Liu WP, Niu YF, Olaizola B, Ojala J, Page CAA, Page RD, Poleshchuk O, Raabe R, Xie MR, Yuan CX, Yue Z, Zhang YN, ISOLDE Collaboration

Phys Rev Lett · 2026 Jun · PMID 42330466 · Publisher ↗

Experimental observations of the low-lying states in ^{12}Be and their accurate modeling play an essential role in understanding the disappearance of the N=8 magic number. Long-standing experimental ambiguities have been... Experimental observations of the low-lying states in ^{12}Be and their accurate modeling play an essential role in understanding the disappearance of the N=8 magic number. Long-standing experimental ambiguities have been clarified using an one-neutron adding (d, p) reaction on ^{11}Be using the ISOLDE Solenoidal Spectrometer at CERN's HIE-ISOLDE facility. The single-particle energies of 1s_{1/2}, 0d_{5/2}, and 0p_{1/2} orbitals in ^{12}Be have been determined from the extracted spectroscopic factors. A significant reduction between the separation of 1s_{1/2} and 0p_{1/2} orbitals is found in comparison with the carbon isotones, highlighting the breakdown of the N=8 shell. These observations serve as an important test of different effects incorporated in theoretical models. It is found that two synergistic mechanisms, core deformation and weak binding, are responsible for the N=8 shell breaking and the exotic near-threshold phenomena observed in ^{12}Be, including the narrow unnatural-parity resonance 0_{1}^{-} and the possible halolike nature of the 0_{2}^{+} isomer.
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Quasinormal Modes Ratios as Agnostic Test of General Relativity.

Franchini N

Phys Rev Lett · 2026 Jun · PMID 42330465 · Publisher ↗

In this Letter, we provide a novel test of general relativity based on ringdown analysis. The test is performed on agnostic models, where the postmerger signal is fitted with a superposition of damped sinusoids. If at le... In this Letter, we provide a novel test of general relativity based on ringdown analysis. The test is performed on agnostic models, where the postmerger signal is fitted with a superposition of damped sinusoids. If at least two modes are detected, one has to compute the ratio of the frequencies and of the damping times and compare them against the predictions of general relativity. By considering ratios, the dependency on the black hole's mass is scaled away. Most notably, we find that the ratios vary very little with the spin, the real part depends mostly on the angular momentum of the mode ℓ and the imaginary part depends mostly on the overtone number n: different combinations create specific mode islands. We provide a qualitative explanation of these islands through a semianalytical argument. We discuss the application of the method to future detectors. Finally, we show that ratios in alternative theories of gravity or between different field content drastically differ from those of general relativity.
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Single-Enantiomer Spin Polarizers in Superconducting Junctions.

Meyer L, Néel N, Kröger J

Phys Rev Lett · 2026 Jun · PMID 42330464 · Publisher ↗

Decorating the superconducting Pb tip of a scanning tunneling microscope with a Mn atom cluster gives rise to Yu-Shiba-Rusinov resonances that serve as spin-sensitive probes of the tunneling current in junctions of singl... Decorating the superconducting Pb tip of a scanning tunneling microscope with a Mn atom cluster gives rise to Yu-Shiba-Rusinov resonances that serve as spin-sensitive probes of the tunneling current in junctions of single heptahelicene molecules adsorbed on Pb(111). The signal strength of these states in spectroscopy of the differential conductance depends on the handedness of the probed molecule, the direction of current flow, and the intramolecular site. These findings support the presence of the chirality-induced spin selectivity effect and the role of a single enantiomer as a spin polarizer.
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Observable Gravitational Wave Strain at Second Order.

Domènech G, Pi S, Wang A

Phys Rev Lett · 2026 Jun · PMID 42330463 · Publisher ↗

There is currently no rigorous definition of gravitational wave strain at second order in cosmological perturbation theory. The usual association of gravitational waves with transverse and traceless fluctuations of the m... There is currently no rigorous definition of gravitational wave strain at second order in cosmological perturbation theory. The usual association of gravitational waves with transverse and traceless fluctuations of the metric on spatial hypersurfaces becomes ambiguous at second order, as it inherently depends on the spacetime slicing. While this poses no practical issues in linearized gravity, it presents a fundamental problem for secondary gravitational waves, especially notorious for gravitational waves induced by primordial fluctuations. We compute, for the first time, the observable gravitational wave strain at second order as measured by geodesic observers that emit and receive electromagnetic signals, thereby settling the debate on gauge ambiguities. Working in a gauge invariant fashion, we find that the measured gravitational wave strain coincides with the transverse-traceless components in the Newton gauge.
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Entropic Charge Separation as a General Mechanism Arresting Nanoscale Condensate Coarsening.

Chen F, Yuan J, Zhang Y … +2 more , Tanaka H, Shum HC

Phys Rev Lett · 2026 Jun · PMID 42330462 · Publisher ↗

Classical liquid-liquid phase separation predicts that droplets grow continuously via Brownian coalescence or Ostwald ripening, yet many nanoscale biomolecular condensates remain stable for hours or days without active r... Classical liquid-liquid phase separation predicts that droplets grow continuously via Brownian coalescence or Ostwald ripening, yet many nanoscale biomolecular condensates remain stable for hours or days without active regulation. Such condensates often arise through complex coacervation between oppositely charged macromolecules, making this interaction motif broadly relevant in biology and soft matter. Here we combine experiments, theory, and simulations to identify a merging-limited coarsening (MLC) regime in which merging of condensates decreases sharply below a critical droplet size. Chain-length asymmetry between oppositely charged polymers drives entropic interfacial charge separation even at globally neutral stoichiometry, imparting net droplet charges and generating long-range electrostatic repulsion. These size-dependent barriers lead to exponential rather than classical power-law growth and trap droplets in long-lived metastable states. Our framework unifies suppressed MLC and classical Brownian coalescence within a single predictive model and provides a general mechanism for condensate stability in both synthetic systems and living cells.
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Weak-Memory Dynamics in Discrete Time.

Meyer H, Brandner K

Phys Rev Lett · 2026 Jun · PMID 42330461 · Publisher ↗

Discrete dynamics arise naturally in systems with broken temporal translation symmetry and are typically described by first-order recurrence relations representing classical or quantum Markov chains. When memory effects... Discrete dynamics arise naturally in systems with broken temporal translation symmetry and are typically described by first-order recurrence relations representing classical or quantum Markov chains. When memory effects induced by hidden degrees of freedom are relevant, however, higher-order discrete evolution equations are generally required. Focusing on linear dynamics, we identify a well-delineated weak-memory regime where such equations can, on an intermediate timescale, be systematically reduced to a unique first-order counterpart acting on the same state space. We formulate our results as a mathematical theorem and work out two examples showing how they can be applied to stochastic Floquet dynamics under coarse-grained and quantum collisional models.
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Emergent Isotropic-Nematic Transition in 3D Semiflexible Active Polymers.

Hooijschuur T, Irani E, Deblais A … +1 more , Jabbari-Farouji S

Phys Rev Lett · 2026 Jun · PMID 42330460 · Publisher ↗

Active semiflexible filament collectives, ranging from motor-driven cytoskeletal filaments to slender organisms such as cyanobacteria and worm aggregates, abound in nature. Yet how activity and flexibility jointly govern... Active semiflexible filament collectives, ranging from motor-driven cytoskeletal filaments to slender organisms such as cyanobacteria and worm aggregates, abound in nature. Yet how activity and flexibility jointly govern their organization, especially isotropic-nematic (I-N) transition, remains poorly understood. Performing large-scale Brownian dynamics simulations of 3D active semiflexible polymers with varying flexibility degrees, we show that tangential active forces systematically shift the I-N transition to higher densities, with the shift controlled by the flexibility degree and activity strength. Strikingly, activity alters the nature of the transition: discontinuous at low strengths, continuous at moderate strengths, and ultimately suppressed at high activity levels. The delayed I-N transition originates from enhanced collective bending fluctuations, resulting in chain shrinkage and enlargement of effective confinement tube. At moderate activity levels, these fluctuations can trigger large-scale excitations that stochastically drive temporal transitions between nematic and isotropic states, indicating an activity-induced instability of the nematic field. We summarize this behavior in nonequilibrium state diagrams of density and activity for different flexibility degrees.
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Mie Scattering Analog Circuit Emulator.

Corsaro E, Balato M, Miano G … +3 more , Petrarca C, Alù A, Forestiere C

Phys Rev Lett · 2026 Jun · PMID 42330459 · Publisher ↗

Mie scattering describes the linear interaction of electromagnetic waves with spheres of arbitrary composition and size. Here, we introduce and experimentally validate an analog circuit emulator of Mie scattering by temp... Mie scattering describes the linear interaction of electromagnetic waves with spheres of arbitrary composition and size. Here, we introduce and experimentally validate an analog circuit emulator of Mie scattering by temporally dispersive spheres. The emulator reconstructs the full scattering response using a modular lumped-element network, in which excitation conditions are set by generators and filters, while distinct resistor-inductor-capacitor networks encode material dispersion and radiation properties of the supported resonant modes. We demonstrate a one-to-one correspondence between the time-averaged powers scattered, absorbed, and extinguished by a dispersive sphere, and the power absorbed or supplied within distinct circuit stages, yielding a circuit-level realization of optical power conservation. Our results establish an experimentally accessible platform for exploring and designing dispersion-engineered scatterers.
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Evidence of Chiral Fermion Edge Modes through Geometric Engineering of Thermal Hall Effect in α-RuCl_{3}.

Zhang H, Halász GB, Ghosh S … +5 more , Jesse S, Ward TZ, Tennant DA, McGuire MA, Yan J

Phys Rev Lett · 2026 Jun · PMID 42330458 · Publisher ↗

The experimental observation of half-integer-quantized thermal Hall conductivity in the Kitaev candidate material α-RuCl_{3} has served as a signature of non-Abelian anyons through an associated chiral Majorana edge mode... The experimental observation of half-integer-quantized thermal Hall conductivity in the Kitaev candidate material α-RuCl_{3} has served as a signature of non-Abelian anyons through an associated chiral Majorana edge mode. However, both the reproducibility of the quantized thermal Hall conductivity and the fundamental nature of the associated heat carriers, whether bosonic or fermionic, are subjects of ongoing and vigorous debate. In a recent theoretical work, it was proposed that varying the sample geometry through creating constrictions can distinguish between different origins of the thermal Hall effect in magnetic insulators. Here, we provide experimental evidence of chiral fermion edge modes by comparing the thermal Hall effect of a geometrically constricted α-RuCl_{3} sample with that of an unconstricted sample. In contrast to the unconstricted crystals where the thermal Hall signal fades below 5 K, the constricted crystals display a significant thermal Hall signal that remains measurable even at 2 K. This sharp difference agrees well with the theoretical prediction and provides compelling evidence for the contribution of chiral fermion edge modes to the thermal Hall effect in α-RuCl_{3}. More broadly, this work confirms that the geometry dependence of the thermal Hall effect can help identify chiral spin liquids in candidate materials like α-RuCl_{3} and paves the way for the experimental realization of thermal anyon interferometry.
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Testing Genuine Multipartite Nonlocality via an Inflated Network with Multicopy Entangled States.

Zhang QX, Luo MX, Mao YL … +6 more , Chen H, Yao YH, Liu ZL, Fei SM, Yang X, Li ZD

Phys Rev Lett · 2026 Jun · PMID 42330457 · Publisher ↗

Understanding the nonlocality of multipartite quantum systems provides valuable insights into their behaviors and potential applications. In this Letter, assuming a quantum network inflated with multiple copies of genuin... Understanding the nonlocality of multipartite quantum systems provides valuable insights into their behaviors and potential applications. In this Letter, assuming a quantum network inflated with multiple copies of genuine multipartite entangled states, we propose a novel noise-robust approach to test the genuine multipartite nonlocality inherent in each copy under Svetlichny's biseparable model. This extends Gisin's theorem to an arbitrary number of parties, establishing the equivalence among genuine multipartite nonlocality, genuine multipartite steering, and genuine multipartite entanglement for all multipartite pure states under the multiple copies assumption. In the experiment, we employ a hybrid photonic quantum network to verify the genuine tripartite nonlocality of generalized Greenberger-Horne-Zeilinger and W states beyond previously explored parameter regimes. This Letter not only offers a unified robust method on exploring multipartite quantum correlations, but also opens a new avenue for studying genuine multipartite nonlocality through network-distributed multicopy quantum states and different network topologies.
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Acoustic Bound Pair States in the Continuum Induced by Off-Site Two-Body Interactions.

Pu Z, Hua C, He H … +5 more , Ye L, Lu J, Deng W, Ke M, Liu Z

Phys Rev Lett · 2026 Jun · PMID 42330456 · Publisher ↗

Bound states in the continuum (BICs), spatially localized states embedded in radiating continuum, have been extensively investigated in single-particle systems, also enabling high-performance applications in classical wa... Bound states in the continuum (BICs), spatially localized states embedded in radiating continuum, have been extensively investigated in single-particle systems, also enabling high-performance applications in classical wave systems. Recently, exploring many-body BICs in correlated systems has emerged as a pivotal frontier with increasing research interest. However, the majority of previous studies focus largely on on-site interactions with tailored conditions, incurring significant implementation challenges. Whether off-site interactions, e.g., many-body hoppings, can generate many-body BICs and how to characterize them in experiments remains an open question. Here, we first predict and realize a boundary-localized two-body BIC, the bound pair state in the continuum (BPIC), arising from uniform two-body hoppings. Analytically, we demonstrate not just the formation of bound pairs, but the spectral coexistence of the boundary-localized BPIC and the scattering continuum. Experimentally, developing a phononic crystal platform as a classical-wave simulator, we map the correlated particle dynamics onto acoustic wave propagation and observe the acoustic BPIC. Our findings build a new bridge between the BIC research and many-body physics, and may promote the development of high-Q acoustic devices in applications.
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Nonlinear Magnetoelectric Edelstein Effect.

Jia J, Xiang L, Qiao Z … +1 more , Wang J

Phys Rev Lett · 2026 Jun · PMID 42330455 · Publisher ↗

The generation of spin magnetization by linear and nonlinear Edelstein effects has so far relied solely on electric fields. Here, we propose a distinct mechanism, the nonlinear magnetoelectric Edelstein effect (NMEE), in... The generation of spin magnetization by linear and nonlinear Edelstein effects has so far relied solely on electric fields. Here, we propose a distinct mechanism, the nonlinear magnetoelectric Edelstein effect (NMEE), in which electric and magnetic fields act cooperatively to produce spin magnetization. The NMEE comprises intrinsic and extrinsic components, both of quantum geometric origin, arising, respectively, from the spin-space Berry curvature dipole and the spin-space quantum metric dipole. Through symmetry analysis, we demonstrate that these two components play complementary roles: the intrinsic NMEE induces a Néel spin-orbit torque, whereas the extrinsic NMEE enables detection of Néel-vector reversal in PT-symmetric antiferromagnets, exemplified by CuMnAs. Moreover, the intrinsic NMEE persists even in insulating systems, as shown in the Kane-Mele model. Our findings establish a quantum-geometric route to manipulate and probe magnetic order, opening new directions for antiferromagnetic spintronics.
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Correlation between Structural Order and Diffusion Length in Granular Flow.

Luce D, Gans A, De Richter SK … +1 more , Vandewalle N

Phys Rev Lett · 2026 Jun · PMID 42330454 · Publisher ↗

We investigate how structural ordering, i.e., crystallization, affects the flow of bidisperse granular materials in a quasi-two-dimensional silo. By systematically varying the mass fraction of two particle sizes, we fine... We investigate how structural ordering, i.e., crystallization, affects the flow of bidisperse granular materials in a quasi-two-dimensional silo. By systematically varying the mass fraction of two particle sizes, we finely tune the degree of local order. Using high-speed imaging and kinematic modeling, we show that crystallization significantly enhances the diffusion length b, a key parameter controlling the velocity profiles within the flowing medium. We reveal a strong correlation between b, the hexatic order parameter ψ_{6}, and the cluster size ξ, highlighting the role of local structural organization in governing macroscopic flow. Furthermore, pressure gradients within the silo stabilize orientational order even without crystallization, thus intrinsically increasing b with height. These results highlight a direct link between microstructural order, pressure, and transport properties in granular silo flows and suggest that similar mechanisms may operate in other particulate systems, such as colloids, foams, or emulsions, where local structural ordering and confinement affect flow and transport.
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