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Title

Tuning the Topological theta-Angle in Cold-Atom Quantum Simulators of Gauge Theories

Author
Corresponding AuthorHalimeh, Jad C.
Publication Years
2022-11-09
DOI
Source Title
EISSN
2691-3399
Volume3Issue:4
Abstract
The topological 0-angle in gauge theories engenders a series of fundamental phenomena, includ-ing violations of charge-parity (CP) symmetry, dynamical topological transitions, and confinement-deconfinement transitions. At the same time, it poses major challenges for theoretical studies, as it implies a sign problem in numerical simulations. Analog quantum simulators open the promising prospect of treat-ing quantum many-body systems with such topological terms, but, contrary to their digital counterparts, they have not yet demonstrated the capacity to control the 0-angle. Here, we demonstrate how a tunable topological 0-term can be added to a prototype theory with U(1) gauge symmetry, a discretized version of quantum electrodynamics in one spatial dimension. As we show, the model can be realized experimentally in a single-species Bose-Hubbard model in an optical superlattice with three different spatial periods, thus requiring only standard experimental resources. Through numerical calculations obtained from the time -dependent density-matrix renormalization group method and exact diagonalization, we benchmark the model system, and illustrate how salient effects due to the 0-term can be observed. These include charge confinement, the weakening of quantum many-body scarring, as well as the disappearance of Coleman's phase transition due to explicit breaking of CP symmetry. This work opens the door towards studying the rich physics of topological gauge-theory terms in large-scale cold-atom quantum simulators.
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Others
Funding Project
European Research Council (ERC) under the European Union[DP190101515] ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy[DP200103760] ; Australian Research Council (ARC) Discovery Project[804305] ; [948141] ; [390814868] ; [EXC-2111]
WOS Research Area
Physics
WOS Subject
Quantum Science & Technology ; Physics, Applied ; Physics, Multidisciplinary
WOS Accession No
WOS:000885458100002
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:5
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/412176
DepartmentDepartment of Physics
Affiliation
1.Ludwig Maximilians Univ Munchen, Dept Phys, Theresienstr 37, D-80333 Munich, Germany
2.Ludwig Maximilians Univ Munchen, Arnold Sommerfeld Ctr Theoret Phys ASC, Theresienstr 37, D-80333 Munich, Germany
3.Munich Ctr Quantum Sci & Technol MCQST, Schellingstr 4, D-80799 Munich, Germany
4.Univ Queensland, Sch Math & Phys, St Lucia, Qld 4072, Australia
5.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
6.Univ Trento, INO CNR BEC Ctr, Via Sommar 14, I-38123 Trento, Italy
7.Univ Trento, Dept Phys, Via Sommar 14, I-38123 Trento, Italy
8.Trento Inst Fundamental Phys & Applicat, INFN TIFPA, Trento, Italy
Recommended Citation
GB/T 7714
Halimeh, Jad C.,McCulloch, Ian P.,Yang, Bing,et al. Tuning the Topological theta-Angle in Cold-Atom Quantum Simulators of Gauge Theories[J]. PRX QUANTUM,2022,3(4).
APA
Halimeh, Jad C.,McCulloch, Ian P.,Yang, Bing,&Hauke, Philipp.(2022).Tuning the Topological theta-Angle in Cold-Atom Quantum Simulators of Gauge Theories.PRX QUANTUM,3(4).
MLA
Halimeh, Jad C.,et al."Tuning the Topological theta-Angle in Cold-Atom Quantum Simulators of Gauge Theories".PRX QUANTUM 3.4(2022).
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