Pub Date : 2023-09-25DOI: 10.1103/revmodphys.95.035005
Bing Zhang
Fast radio bursts, milliseconds-duration radio bursts predominantly originating from cosmological distances, figure among the unsolved puzzles of contemporary astrophysics. The rapid accumulation of observational data has generated an equally intense theoretical activity toward the understanding of the physical processes at the origin of these events. This review presents a thorough survey of the current knowledge about fast radio bursts, starting with the generic constraints that can be placed on theoretical models based on current observations and plasma physics considerations, then moving to a critical discussion of coherent radiation mechanisms and source models currently debated in the scientific community.
{"title":"The physics of fast radio bursts","authors":"Bing Zhang","doi":"10.1103/revmodphys.95.035005","DOIUrl":"https://doi.org/10.1103/revmodphys.95.035005","url":null,"abstract":"Fast radio bursts, milliseconds-duration radio bursts predominantly originating from cosmological distances, figure among the unsolved puzzles of contemporary astrophysics. The rapid accumulation of observational data has generated an equally intense theoretical activity toward the understanding of the physical processes at the origin of these events. This review presents a thorough survey of the current knowledge about fast radio bursts, starting with the generic constraints that can be placed on theoretical models based on current observations and plasma physics considerations, then moving to a critical discussion of coherent radiation mechanisms and source models currently debated in the scientific community.","PeriodicalId":21172,"journal":{"name":"Reviews of Modern Physics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135768891","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}
Pub Date : 2023-09-15DOI: 10.1103/revmodphys.95.031002
Michael Smidman, Oliver Stockert, Emilian M. Nica, Yang Liu, Huiqiu Yuan, Qimiao Si, Frank Steglich
The heavy-fermion compound CeCu${}_{2}$Si${}_{2}$ has long been known to be an unconventional superconductor with $d$-wave symmetry. Ordinarily, this would imply that the gap function has nodes on the Fermi surface. This Colloquium explains that recent experiments have shown that the gap is nonzero everywhere, if small where a single-band wave gap would vanish. The Colloquium discusses theoretical scenarios to explain these observations, as well as the implications for other unconventional superconductors.
{"title":"Colloquium : Unconventional fully gapped superconductivity in the heavy-fermion metal CeCu2Si2","authors":"Michael Smidman, Oliver Stockert, Emilian M. Nica, Yang Liu, Huiqiu Yuan, Qimiao Si, Frank Steglich","doi":"10.1103/revmodphys.95.031002","DOIUrl":"https://doi.org/10.1103/revmodphys.95.031002","url":null,"abstract":"The heavy-fermion compound CeCu${}_{2}$Si${}_{2}$ has long been known to be an unconventional superconductor with $d$-wave symmetry. Ordinarily, this would imply that the gap function has nodes on the Fermi surface. This Colloquium explains that recent experiments have shown that the gap is nonzero everywhere, if small where a single-band wave gap would vanish. The Colloquium discusses theoretical scenarios to explain these observations, as well as the implications for other unconventional superconductors.","PeriodicalId":21172,"journal":{"name":"Reviews of Modern Physics","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135353384","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}
Pub Date : 2023-09-11DOI: 10.1103/revmodphys.95.035004
Attila Szilva, Yaroslav Kvashnin, Evgeny A. Stepanov, Lars Nordström, Olle Eriksson, Alexander I. Lichtenstein, Mikhail I. Katsnelson
{"title":"Quantitative theory of magnetic interactions in solids","authors":"Attila Szilva, Yaroslav Kvashnin, Evgeny A. Stepanov, Lars Nordström, Olle Eriksson, Alexander I. Lichtenstein, Mikhail I. Katsnelson","doi":"10.1103/revmodphys.95.035004","DOIUrl":"https://doi.org/10.1103/revmodphys.95.035004","url":null,"abstract":"","PeriodicalId":21172,"journal":{"name":"Reviews of Modern Physics","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135936885","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}
Pub Date : 2023-06-27DOI: 10.1103/revmodphys.95.025005
O. Hurricane, P. Patel, R. Betti, D. Froula, S. Regan, S. Slutz, M. Gomez, M. A. Sweeney
{"title":"Physics principles of inertial confinement fusion and U.S. program overview","authors":"O. Hurricane, P. Patel, R. Betti, D. Froula, S. Regan, S. Slutz, M. Gomez, M. A. Sweeney","doi":"10.1103/revmodphys.95.025005","DOIUrl":"https://doi.org/10.1103/revmodphys.95.025005","url":null,"abstract":"","PeriodicalId":21172,"journal":{"name":"Reviews of Modern Physics","volume":" ","pages":""},"PeriodicalIF":44.1,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45678297","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}
Pub Date : 2023-05-15DOI: 10.1103/RevModPhys.95.031001
M. Zaletel, M. Lukin, C. Monroe, C. Nayak, F. Wilczek, N. Yao
The spontaneous breaking of time translation symmetry has led to the discovery of a new phase of matter - the discrete time crystal. Discrete time crystals exhibit rigid subharmonic oscillations, which result from a combination of many-body interactions, collective synchronization, and ergodicity breaking. This Colloquium reviews recent theoretical and experimental advances in the study of quantum and classical discrete time crystals. We focus on the breaking of ergodicity as the key to discrete time crystals and the delaying of ergodicity as the source of numerous phenomena that share many of the properties of discrete time crystals, including the AC Josephson effect, coupled map lattices, and Faraday waves. Theoretically, there exists a diverse array of strategies to stabilize time crystalline order in both closed and open systems, ranging from localization and prethermalization to dissipation and error correction. Experimentally, many-body quantum simulators provide a natural platform for investigating signatures of time crystalline order; recent work utilizing trapped ions, solid-state spin systems, and superconducting qubits will be reviewed. Finally, this Colloquium concludes by describing outstanding challenges in the field and a vision for new directions on both the experimental and theoretical fronts.
{"title":"Colloquium\u0000: Quantum and classical discrete time crystals","authors":"M. Zaletel, M. Lukin, C. Monroe, C. Nayak, F. Wilczek, N. Yao","doi":"10.1103/RevModPhys.95.031001","DOIUrl":"https://doi.org/10.1103/RevModPhys.95.031001","url":null,"abstract":"The spontaneous breaking of time translation symmetry has led to the discovery of a new phase of matter - the discrete time crystal. Discrete time crystals exhibit rigid subharmonic oscillations, which result from a combination of many-body interactions, collective synchronization, and ergodicity breaking. This Colloquium reviews recent theoretical and experimental advances in the study of quantum and classical discrete time crystals. We focus on the breaking of ergodicity as the key to discrete time crystals and the delaying of ergodicity as the source of numerous phenomena that share many of the properties of discrete time crystals, including the AC Josephson effect, coupled map lattices, and Faraday waves. Theoretically, there exists a diverse array of strategies to stabilize time crystalline order in both closed and open systems, ranging from localization and prethermalization to dissipation and error correction. Experimentally, many-body quantum simulators provide a natural platform for investigating signatures of time crystalline order; recent work utilizing trapped ions, solid-state spin systems, and superconducting qubits will be reviewed. Finally, this Colloquium concludes by describing outstanding challenges in the field and a vision for new directions on both the experimental and theoretical fronts.","PeriodicalId":21172,"journal":{"name":"Reviews of Modern Physics","volume":" ","pages":""},"PeriodicalIF":44.1,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42662129","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}
Pub Date : 2023-04-20DOI: 10.1103/revmodphys.95.025001
J. Junquera, Y. Nahas, S. Prokhorenko, L. Bellaiche, J. Íñiguez, D. Schlom, Long-qing Chen, S. Salahuddin, D. A. Muller, Lane W. Martin, R. Ramesh
{"title":"Topological phases in polar oxide nanostructures","authors":"J. Junquera, Y. Nahas, S. Prokhorenko, L. Bellaiche, J. Íñiguez, D. Schlom, Long-qing Chen, S. Salahuddin, D. A. Muller, Lane W. Martin, R. Ramesh","doi":"10.1103/revmodphys.95.025001","DOIUrl":"https://doi.org/10.1103/revmodphys.95.025001","url":null,"abstract":"","PeriodicalId":21172,"journal":{"name":"Reviews of Modern Physics","volume":" ","pages":""},"PeriodicalIF":44.1,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47934560","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}
Pub Date : 2023-03-28DOI: 10.1103/revmodphys.95.010501
S. Manabe
{"title":"Nobel Lecture: Physical modeling of Earth’s climate","authors":"S. Manabe","doi":"10.1103/revmodphys.95.010501","DOIUrl":"https://doi.org/10.1103/revmodphys.95.010501","url":null,"abstract":"","PeriodicalId":21172,"journal":{"name":"Reviews of Modern Physics","volume":" ","pages":""},"PeriodicalIF":44.1,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47425989","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}
Pub Date : 2023-03-10DOI: 10.1103/revmodphys.95.015002
Alexandra S. Sheremet, Mihail I. Petrov, I. Iorsh, A. Poshakinskiy, A. Poddubny
{"title":"Waveguide quantum electrodynamics: Collective radiance and photon-photon correlations","authors":"Alexandra S. Sheremet, Mihail I. Petrov, I. Iorsh, A. Poshakinskiy, A. Poddubny","doi":"10.1103/revmodphys.95.015002","DOIUrl":"https://doi.org/10.1103/revmodphys.95.015002","url":null,"abstract":"","PeriodicalId":21172,"journal":{"name":"Reviews of Modern Physics","volume":" ","pages":""},"PeriodicalIF":44.1,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47208516","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}
This paper continues to explore and review the two topics of “synthetic” gauge field and “emergent” gauge field, which have already been considered in the last paper entitled “Notes on Gauge Field Theories (I)”. The present paper on “Notes on Gauge Field Theories (II)” includes three topics: i) A theory of local electromagnetic dual transformation symmetry and dual gauge field is suggested based on the previous theories of magnetic charge and dual transformation, and it is pointed out that the effect of dual gauge potential makes an electromagnetic wave in vacuum seem to propagate in an anisotropic medium whose permittivity and permeability are both tensors; ii) A non-Abelian version or generalized Kaluza-Klein theory is given in detail. The purpose is to introduce a theory of fundamental interaction that unifies Einstein’s general-relativity gravity and Yang-Mills gauge interaction. In this model, the Yang-Mills gauge potential is a higher-dimensional gravitational me-tric-field off-diagonal component emerging in the ordinary four-dimensional spacetime, or in other words, the Yang-Mills gauge field is essentially a non-Abelian Kaluza-Klein higher-dimensional gravitational field; iii) A theory of higher-dimensional spin-connection gravitational gauge field theory, of which the gravitational Lagrangian density is quadratic in the Riemannian curvature, is reviewed. The higher-dimensional spin-affine connection (the Lorentz connection) can serve as a Yang-Mills gauge potential and the spin currents of vectorial and spinorial matter fields play a role of Yang-Mills gauge charge currents in the four-dimensional spacetime, and so the gravitational interaction and the Yang-Mills gauge interaction can be unified into the present higher-dimensional spin-connection gravitational gauge theory, which was suggested by us. There have been many theories of gravitation in the literature. Although the merits and weaknesses of only the non-Abelian version of Kaluza-Klein theory and the gauge theory of gravitation are reviewed in this paper, we expect that the analysis of these two theories would still help readers to draw parallels among the relevant gravity theories and to understand the stylistic characteristics, advantages and disadvantages of various gravitation theories in the literature.
{"title":"Notes on Gauge Field Theories (II): Local Electromagnetic Dual Transformation The-ory, Generalized Kaluza-Klein Emergent Yang-Mills Gauge Field Theory and Higher-Dimensional Gravitational Gauge Field Theory","authors":"建其 沈","doi":"10.12677/mp.2023.135014","DOIUrl":"https://doi.org/10.12677/mp.2023.135014","url":null,"abstract":"This paper continues to explore and review the two topics of “synthetic” gauge field and “emergent” gauge field, which have already been considered in the last paper entitled “Notes on Gauge Field Theories (I)”. The present paper on “Notes on Gauge Field Theories (II)” includes three topics: i) A theory of local electromagnetic dual transformation symmetry and dual gauge field is suggested based on the previous theories of magnetic charge and dual transformation, and it is pointed out that the effect of dual gauge potential makes an electromagnetic wave in vacuum seem to propagate in an anisotropic medium whose permittivity and permeability are both tensors; ii) A non-Abelian version or generalized Kaluza-Klein theory is given in detail. The purpose is to introduce a theory of fundamental interaction that unifies Einstein’s general-relativity gravity and Yang-Mills gauge interaction. In this model, the Yang-Mills gauge potential is a higher-dimensional gravitational me-tric-field off-diagonal component emerging in the ordinary four-dimensional spacetime, or in other words, the Yang-Mills gauge field is essentially a non-Abelian Kaluza-Klein higher-dimensional gravitational field; iii) A theory of higher-dimensional spin-connection gravitational gauge field theory, of which the gravitational Lagrangian density is quadratic in the Riemannian curvature, is reviewed. The higher-dimensional spin-affine connection (the Lorentz connection) can serve as a Yang-Mills gauge potential and the spin currents of vectorial and spinorial matter fields play a role of Yang-Mills gauge charge currents in the four-dimensional spacetime, and so the gravitational interaction and the Yang-Mills gauge interaction can be unified into the present higher-dimensional spin-connection gravitational gauge theory, which was suggested by us. There have been many theories of gravitation in the literature. Although the merits and weaknesses of only the non-Abelian version of Kaluza-Klein theory and the gauge theory of gravitation are reviewed in this paper, we expect that the analysis of these two theories would still help readers to draw parallels among the relevant gravity theories and to understand the stylistic characteristics, advantages and disadvantages of various gravitation theories in the literature.","PeriodicalId":21172,"journal":{"name":"Reviews of Modern Physics","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135754375","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}
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