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Atom-only theories for U(1) symmetric cavity-QED models
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dc.contributor.author | Palacino, Roberta | |
dc.contributor.author | Keeling, Jonathan | |
dc.date.accessioned | 2021-07-22T20:30:17Z | |
dc.date.available | 2021-07-22T20:30:17Z | |
dc.date.issued | 2021-07-19 | |
dc.identifier | 274866791 | |
dc.identifier | 08494915-2085-4380-8ca9-d5b634d73ed9 | |
dc.identifier | 000674634400007 | |
dc.identifier | 85113832244 | |
dc.identifier.citation | Palacino , R & Keeling , J 2021 , ' Atom-only theories for U(1) symmetric cavity-QED models ' , Physical Review Research , vol. 3 , no. 3 , L032016 . https://doi.org/10.1103/PhysRevResearch.3.L032016 | en |
dc.identifier.issn | 2643-1564 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/2011.12120v1 | |
dc.identifier.other | ORCID: /0000-0002-4283-552X/work/97473518 | |
dc.identifier.uri | https://hdl.handle.net/10023/23617 | |
dc.description | Funding: R.P. was supported by the EPSRC Scottish Doctoral Training Centre in Condensed Matter Physics (CM-CDT), Grant No. EP/L015110/1. | en |
dc.description.abstract | We consider a generalized Dicke model with U(1) symmetry, which can undergo a transition to a superradiant state that spontaneously breaks this symmetry. By exploiting the difference in timescale between atomic and cavity dynamics, one may eliminate the cavity dynamics, providing an atom-only theory. We show that the standard Redfield theory cannot describe the transition to the superradiant state, but including higher-order corrections does recover the transition. Our work reveals how the forms of effective theories must vary for models with continuous symmetry, and provides a template to develop effective theories of more complex models. | |
dc.format.extent | 6 | |
dc.format.extent | 439289 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review Research | en |
dc.subject | QC Physics | en |
dc.subject | DAS | en |
dc.subject | MCC | en |
dc.subject | NCAD | en |
dc.subject.lcc | QC | en |
dc.title | Atom-only theories for U(1) symmetric cavity-QED models | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Centre for Designer Quantum Materials | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | https://doi.org/10.1103/PhysRevResearch.3.L032016 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | EP/L015110/1 | en |
dc.identifier.grantnumber | EP/L015110/1 | en |
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