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Bath induced coherence and the secular approximation
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dc.contributor.author | Eastham, P. R. | |
dc.contributor.author | Kirton, P. | |
dc.contributor.author | Cammack, H. M. | |
dc.contributor.author | Lovett, B. W. | |
dc.contributor.author | Keeling, J. | |
dc.date.accessioned | 2016-07-19T15:30:05Z | |
dc.date.available | 2016-07-19T15:30:05Z | |
dc.date.issued | 2016-07 | |
dc.identifier | 243708615 | |
dc.identifier | 491ec1b0-7d63-4b05-be9e-878b189ff271 | |
dc.identifier | 84978776972 | |
dc.identifier | 000380095000002 | |
dc.identifier.citation | Eastham , P R , Kirton , P , Cammack , H M , Lovett , B W & Keeling , J 2016 , ' Bath induced coherence and the secular approximation ' , Physical Review. A, Atomic, molecular, and optical physics , vol. 94 , no. 1 , 012110 . https://doi.org/10.1103/PhysRevA.94.012110 | en |
dc.identifier.issn | 1050-2947 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1508.04744v2 | |
dc.identifier.other | ORCID: /0000-0002-4283-552X/work/27559412 | |
dc.identifier.other | ORCID: /0000-0001-5142-9585/work/47136537 | |
dc.identifier.uri | https://hdl.handle.net/10023/9169 | |
dc.description.abstract | Finding efficient descriptions of how an environment affects a collection of discrete quantum systems would lead to new insights into many areas of modern physics. Markovian, or time-local, methods work well for individual systems, but for groups a question arises: does system-bath or inter-system coupling dominate the dissipative dynamics? The answer has profound consequences for the long-time quantum correlations within the system. We consider two bosonic modes coupled to a bath. By comparing an exact solution to different Markovian master equations, we find that a smooth crossover of the equations-of-motion between dominant inter-system and system-bath coupling exists - but requires a non-secular master equation. We predict a singular behaviour of the dynamics, and show that the ultimate failure of non-secular equations of motion is essentially a failure of the Markov approximation. Our findings justify the use of time-local theories throughout the crossover between system-bath dominated and inter-system-coupling dominated dynamics. | |
dc.format.extent | 9 | |
dc.format.extent | 1161223 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review. A, Atomic, molecular, and optical physics | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | DAS | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Bath induced coherence and the secular approximation | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | The Leverhulme Trust | 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. Condensed Matter Physics | en |
dc.identifier.doi | 10.1103/PhysRevA.94.012110 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | EP/I031014/1 | en |
dc.identifier.grantnumber | EP/M025330/1 | en |
dc.identifier.grantnumber | IAF-2014-025 | en |
dc.identifier.grantnumber | EP/M010910/1 | en |
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