{"title":"Intra-Unit-Cell Singlet Pairing Mediated by Altermagnetic Fluctuations","authors":"Yi-Ming Wu, Yuxuan Wang, Rafael M. Fernandes","doi":"10.1103/dlpb-gfct","DOIUrl":"https://doi.org/10.1103/dlpb-gfct","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"34 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Counting the Ground State Degeneracy by Evolution Methods","authors":"Zhen Guo, Li You","doi":"10.1103/38gb-h7wv","DOIUrl":"https://doi.org/10.1103/38gb-h7wv","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abraham I. Harte, Francisco M. Blanco, Éanna É. Flanagan
{"title":"Nonlinearly Self-Interacting Extended Bodies Move as Test Bodies in Effective External Fields","authors":"Abraham I. Harte, Francisco M. Blanco, Éanna É. Flanagan","doi":"10.1103/k74d-dj7y","DOIUrl":"https://doi.org/10.1103/k74d-dj7y","url":null,"abstract":"In electromagnetism, linearized general relativity, and other contexts, previous work has shown that the laws of motion which govern compact, self-interacting bodies can be obtained by applying “Detweiler-Whiting prescriptions” to the laws of motion that govern test bodies. These prescriptions replace any field that appears in a test-body law of motion with a certain effective field which is a quasilocal functional of the physical variables—a functional that can be interpreted as a regularization procedure in a point-particle limit. We generalize these results, presenting a formalism that allows Detweiler-Whiting prescriptions to be be directly derived for extended bodies, even in nonlinear field theories. If a generating functional with particular properties can be constructed, we find effective linear and angular momenta which evolve via Mathisson-Papapetrou-Dixon equations involving appropriate effective fields. These equations implicitly incorporate all self-force, self-torque, and extended-body effects. Although our main focus is on bodies coupled to nonlinear scalar fields, we also remark on the gravitational case.","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"4 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qiuyang Li, Xiaohan Wan, Senlei Li, Adam Alfrey, Wenhao Liu, Zixin Zhai, Wyatt Alpers, Yujie Yang, Irmina Wladyszewska, Christiano W. Beach, Liuyan Zhao, Bing Lv, Chunhui Rita Du, Kai Sun, Hui Deng
{"title":"Twist Engineering of Anisotropic Excitonic and Optical Properties of a Two-Dimensional Magnetic Semiconductor","authors":"Qiuyang Li, Xiaohan Wan, Senlei Li, Adam Alfrey, Wenhao Liu, Zixin Zhai, Wyatt Alpers, Yujie Yang, Irmina Wladyszewska, Christiano W. Beach, Liuyan Zhao, Bing Lv, Chunhui Rita Du, Kai Sun, Hui Deng","doi":"10.1103/zbbr-5mgv","DOIUrl":"https://doi.org/10.1103/zbbr-5mgv","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"348 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Matteo Ciardi, Kasper Rønning Pedersen, Tim Langen, Thomas Pohl
{"title":"Self-Bound Superfluid Membranes and Monolayer Crystals of Ultracold Polar Molecules","authors":"Matteo Ciardi, Kasper Rønning Pedersen, Tim Langen, Thomas Pohl","doi":"10.1103/v7gw-xy36","DOIUrl":"https://doi.org/10.1103/v7gw-xy36","url":null,"abstract":"We investigate the physics of ultracold dipolar molecules using path-integral quantum Monte Carlo simulations, and construct the complete phase diagram extending from weak to strong interactions and from small to mesoscopic particle numbers. Our calculations predict the formation of self-bound quantum droplets at interaction strengths lower than previous estimates for molecular condensates. Strikingly, we observe that, for stronger interactions, the oblate quantum droplet transitions to a two-dimensional sheet or superfluid membrane with a thickness of a single molecule. As interactions are increased further the system continually loses superfluidity while correlations develop, and is eventually found to undergo a transition to a crystalline monolayer that remains self-bound without external confinement. The spontaneous formation of such two-dimensional phases from a three-dimensional quantum gas is traced back to the peculiar anisotropic form of the dipole-dipole interaction generated by microwave dressing of rotational molecular states. For sufficiently large particle numbers, crystallization takes place for comparably low interaction strengths that do not promote two-body bound states and should thus be observable in ongoing experiments without limitations from three-body recombination.","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"74 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
William S. Huxter, Federico Dalmagioni, Christian L. Degen
{"title":"Multiplexed Scanning Microscopy with Dual-Qubit Spin Sensors","authors":"William S. Huxter, Federico Dalmagioni, Christian L. Degen","doi":"10.1103/y14n-44h3","DOIUrl":"https://doi.org/10.1103/y14n-44h3","url":null,"abstract":"Scanning probe microscopy with multiqubit sensors offers the potential to improve imaging speed and measure previously inaccessible quantities, such as two-point correlations. We develop a multiplexed quantum sensing approach with scanning probes containing two nitrogen-vacancy (NV) centers at the tip apex. A shared optical channel is used for simultaneous qubit initialization and readout, while phase- and frequency-dependent microwave spin manipulations are leveraged for demultiplexing the optical readout signal. Scanning dual-NV magnetometry is first demonstrated by simultaneously imaging multiple field projections of a ferrimagnetic racetrack device. Then, we record the two-point covariance of spatially correlated field fluctuations across a current-carrying wire. Our multiplex framework establishes a method to investigate a variety of spatiotemporal correlations, including phase transitions and electronic noise, with nanoscale resolution.","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}