{"title":"Essay: Topological Phases and Exceptional Points in Non-Hermitian Systems","authors":"Peng Xue","doi":"10.1103/ll76-j2l5","DOIUrl":"https://doi.org/10.1103/ll76-j2l5","url":null,"abstract":"Non-Hermitian physics is an emerging field that intersects with condensed matter physics, quantum physics, and atomic, molecular, and optical physics. It provides a theoretical framework for open systems, which interact with their environment and undergo nonunitary evolution. This framework features mathematical structures, such as complex eigenvalues, exceptional points, and nonorthogonal eigenstates, fundamentally distinct from Hermitian theories. These structures not only facilitate new methods for precisely customizing non-Hermitian systems for various applications, but also give rise to topological phenomena absent in Hermitian systems, such as non-Hermitian skin effects, exceptional-point-enriched topological phases, and complex-energy band topology. As discoveries in non-Hermitian phenomena continue to grow, a key question arises: what critical impact will non-Hermitian physics have on fundamental physics? In this Essay, I will discuss my perspective on the important open problems and future applications associated with this research area, with an emphasis on novel topological phases and exceptional points in non-Hermitian systems that are relevant to fundamental physics and potential technological applications, aiming to inspire further ideas. .","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"67 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751540","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":"Electron affinity of the carbon dimer from threshold photodetachment spectroscopy","authors":"","doi":"10.1103/wvxs-6wz5","DOIUrl":"https://doi.org/10.1103/wvxs-6wz5","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"46 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739448","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":"Study of key 57 Ni( p , γ ) 58 Cu resonances to understand 44 Ti nucleosynthesis in supernovae","authors":"","doi":"10.1103/1848-pwf5","DOIUrl":"https://doi.org/10.1103/1848-pwf5","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"26 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739406","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":"Evidence of spin-interference effects in exclusive J / ψ → e + e − photoproduction in ultraperipheral heavy-ion collisions","authors":"","doi":"10.1103/tcdb-ldh8","DOIUrl":"https://doi.org/10.1103/tcdb-ldh8","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"20 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739501","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":"Conformal data for the O(3) Wilson-Fisher conformal field theory from fuzzy sphere realization of the quantum rotor model","authors":"","doi":"10.1103/4yfv-xbcj","DOIUrl":"https://doi.org/10.1103/4yfv-xbcj","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"33 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739493","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":"Dynamical Love numbers for black holes and beyond from Shell Effective Field Theory","authors":"","doi":"10.1103/mtqm-xz2k","DOIUrl":"https://doi.org/10.1103/mtqm-xz2k","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"87 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739495","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":"Precision extraction of the deuteron electric polarizability via the Baldin sum rule with full low-energy coverage","authors":"","doi":"10.1103/xmmq-gnvq","DOIUrl":"https://doi.org/10.1103/xmmq-gnvq","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"254 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739449","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":"Signatures of a subpopulation of hierarchical mergers in the GWTC-4 gravitational-wave dataset","authors":"","doi":"10.1103/n6p4-ftgq","DOIUrl":"https://doi.org/10.1103/n6p4-ftgq","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"115 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739494","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}