Physical Review X最新文献

{"title":"Spin Nematic Liquid Crystal and Scalar Spin Chirality in Tetragonal Lattice\u0000 \u0000 \u0000 \u0000 \u0000 YbMnBi\u0000 \u0000 \u0000 2\u0000 \u0000 \u0000 \u0000 ","authors":"Yaofeng Xie,Sijie Xu,Yu Pan,Taekoo Oh,Tingjun Zhang,Masaaki Matsuda,Zhaoyu Liu,Zehao Wang,Yiheng Wang,Siyu Pan,Avishek Maity,Sylwia Pawledzio,Xiaoping Wang,Songxue Chi,Feng Ye,Yiqing Hao,Huibo Cao,Barry L. Winn,Melissa K. Graves-Brook,Shuai Wu,Fan Li,Xiaoyuan Zhou,Claudia Felser,Naoto Nagaosa,Pengcheng Dai","doi":"10.1103/w1nt-6s12","DOIUrl":"https://doi.org/10.1103/w1nt-6s12","url":null,"abstract":"A spin nematic order, analogous to a nematic liquid crystal, characterizes the spontaneous breaking of spin-space rotational symmetry while preserving time-reversal ( T ) symmetry. On the other hand, the order parameter characterizing the T -symmetry breaking is the composite three-spin order, i.e., the scalar spin chirality (SSC) χ i j k = ⟨ S i · ( S j × S k ) ⟩ , where S i , S j , S k are spins at neighboring sites i , j , k , respectively, and nonzero SSC is known to induce anomalous Hall effect (AHE). Although a spin nematic phase has been suggested in the frustrated magnets and the square-lattice iridate, how a spin nematic phase might affect magneto-transport properties is unknown. Here we use polarized neutron scattering to show that tetragonal lattice A MnBi 2 ( A = Ca , Yb) is a strictly c -axis-aligned collinear antiferromagnet ( C -type) with T N ≈ 270 and 290 K. On cooling from 450 K to T N , low-energy spin excitations in YbMnBi 2 spontaneously change from isotropic to anisotropic in spin space within the tetragonal plane, forming a dynamic spin nematic phase around 400 K due to heavy Yb-induced spin-orbit coupling, before gapping out below T N . Similar polarized neutron scattering measurements on CaMnBi 2 reveal isotropic paramagnetic scattering without a spin nematic phase above T N . Under an in-plane external magnetic field, the Yb 3 + moments may interact with the dynamic spin nematic phase to induce nonzero SSC, giving rise to AHE and anomalous Nernst effect (ANE) in YbMnBi 2 that is absent in CaMnBi 2 above T N . Theoretical analysis of Ginzburg-Landau theory based on the symmetry indicates that the coupling terms between the nematic order and SSC of 5 order in the spin operators are allowed under an external magnetic field B . This could explain the rapid increase of AHE as a function of B in YbMnBi 2 . Our results, therefore, provide compelling evidence for dynamic SSC-induced AHE and ANE in the paramagnetic phase of a compensated collinear antiferromagnet, opening a new avenue for the physics of composite orders of multiple spins for room-temperature spintronics without magnetic order.","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"41 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149089346","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":"Propelling catalytic structures using active biomolecular condensates","authors":"Anonymous","doi":"10.1103/3gm1-qjh3","DOIUrl":"https://doi.org/10.1103/3gm1-qjh3","url":null,"abstract":"","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"9 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092370","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":"Energy-Efficient Control of Interacting Microscopic Systems: When Longer Paths Save Energy","authors":"Samuel Monter,Lars T. Stutzer,Sarah A. M. Loos,Clemens Bechinger","doi":"10.1103/cbbh-8r9c","DOIUrl":"https://doi.org/10.1103/cbbh-8r9c","url":null,"abstract":"We experimentally and theoretically study the thermodynamically optimal control of interacting multiparticle systems, focusing on collections of colloidal particles individually confined in optical traps. We investigate protocols that transport the system between prescribed trap configurations within a fixed time in the most energy efficient way. For Markovian systems with conservative pairwise interactions, we establish a general result in the low-noise limit: optimal particle trajectories are linear in space and time, corresponding to steady straight-line motion, irrespective of the specific interaction potential, even for nonlinear forces. Thus, conservative interactions do not modify the geometry of the optimal paths. This property breaks down in the presence of strong noise or nonconservative interactions. For the paradigmatic case of hydrodynamic coupling, we demonstrate experimentally that optimal control can involve curved trajectories that significantly reduce the energetic cost by exploiting collectively generated fluid flows. The emergence of curved paths as optimal solutions highlights a fundamental distinction between noninteracting and interacting systems and reveals a cooperative mechanism for energy-efficient control.","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"20 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149089145","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":"Coherent phonon motions and ordered vacancy compound mediated quantum path interference in Cu-poor CuInxGa\u0000 \u0000 \u0000 \u0000 \u0000 (\u0000 1\u0000 −\u0000 x\u0000 )\u0000 \u0000 \u0000 \u0000 Se\u0000 \u0000 \u0000 \u0000 2\u0000 \u0000 \u0000 (CIGS) with attosecond transient absorption","authors":"Anonymous","doi":"10.1103/btyv-jrrx","DOIUrl":"https://doi.org/10.1103/btyv-jrrx","url":null,"abstract":"","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"10 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149089146","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":"Emergent gauge flux in mixed QED\u0000 \u0000 \u0000 \u0000 3\u0000 \u0000 \u0000 with flavor chemical potential: Implications for magnetized U(1) Dirac spin liquids","authors":"Anonymous","doi":"10.1103/yb9y-3t91","DOIUrl":"https://doi.org/10.1103/yb9y-3t91","url":null,"abstract":"","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"53 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149089147","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":"Erratum: Programmable Quantum Anomalous Hall Insulator in Twisted Crystalline Flatbands [Phys. Rev. X\u0000 16\u0000 , 011015 (2026)]","authors":"Wenxuan Wang,Yijie Wang,Zaizhe Zhang,Zihao Huo,Gengdong Zhou,Shu Zhang,Kenji Watanabe,Takashi Taniguchi,Xiaoxia Yang,Qing Dai,X. C. Xie,Kaihui Liu,Zhida Song,Xiaobo Lu","doi":"10.1103/xyq4-kr2k","DOIUrl":"https://doi.org/10.1103/xyq4-kr2k","url":null,"abstract":"","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"58 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149089155","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":"Non-Abelian quantum signal processing: A composite pulse for fast analytic control of hybrid oscillator-qubit processors","authors":"","doi":"10.1103/7jwl-k8xg","DOIUrl":"https://doi.org/10.1103/7jwl-k8xg","url":null,"abstract":"","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"12 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149043584","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":"Gravitational Raman scattering: A systematic toolkit for tidal effects in general relativity","authors":"","doi":"10.1103/rzbt-glhr","DOIUrl":"https://doi.org/10.1103/rzbt-glhr","url":null,"abstract":"","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"140 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149043552","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":"Variational Multi-Gaussian Phase-Space Bosonic Dynamics via Automatic Differentiation","authors":"Jacopo Tosca,Francesco Carnazza,Luca Giacomelli,Cristiano Ciuti","doi":"10.1103/q3m5-q44b","DOIUrl":"https://doi.org/10.1103/q3m5-q44b","url":null,"abstract":"We introduce a variational method for simulating the dynamics of interacting open quantum bosonic systems deep in the quantum regime. The method is based on a multidimensional Wigner phase-space representation and employs a variational multi-Gaussian , whose accuracy is systematically controlled by the number of Gaussian components. The variational equations of motion are derived from the Dirac-Frenkel principle and evaluated efficiently by combining the analytical structure of Gaussian functions with automatic differentiation. As a key physical application, we study a driven-dissipative two-dimensional Bose-Hubbard lattice with two-boson coherent driving and two-body losses. Using our dynamical approach, we compute the finite-size scaling of the Liouvillian spectral gap—extracted from the relaxation dynamics—which vanishes in the thermodynamic limit. Our results reveal critical slowing down with dynamical exponents of the 2D quantum Ising universality class, demonstrating the power of our method to capture complex quantum dynamics in large open systems.","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"17 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049501","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":"Chaotic Many-Body Quantum Dynamics, Spectral Correlations, and Energy Diffusion","authors":"J. T. Chalker,Dominik Hahn","doi":"10.1103/bjj5-49pg","DOIUrl":"https://doi.org/10.1103/bjj5-49pg","url":null,"abstract":"We study chaotic many-body quantum dynamics in a minimal model with spatial structure and local interactions. It has a time-independent Hamiltonian, in contrast to quantum circuits and Brownian models, and is simple at the single-site level, in contrast to Sachdev-Ye-Kitaev chains. It is analytically tractable for large local Hilbert space dimension and weak intersite coupling. In this limit, we show that energy dynamics is described by a classical master equation and is diffusive. We also show that the spectral form factor can be expressed exactly in terms of the solution to this master equation. For a two-site system, we obtain closed-form expressions for both the two-point correlator of energy density and the spectral form factor, in essentially perfect agreement with numerical simulations. For an L -site system we show at late times how a linear ramp emerges in the spectral form factor, as universally expected from level repulsion in chaotic quantum systems. Conversely, at earlier times we identify two distinct mechanisms for an increase of the spectral form factor above its ramp value. One of these is associated with energy diffusion and is effective until the Thouless time, which varies as L 2 . The other involves contributions like those that would appear if the system were composed of many uncoupled subsystems: They generate a large enhancement of the spectral form factor and are suppressed on a timescale varying as ( ln L ) 2 . Besides being exact for the limit considered, we believe our approach provides the natural approximation even for small local Hilbert space dimension and strong intersite coupling. We present a numerical study of a spin-half chain, finding an early-time enhancement of the spectral form factor which is qualitatively similar to that in our solvable model.","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"32 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149020971","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}