Singularities in large deviations of work in quantum quenches
We investigate large deviations of the work performed in a quantum quench across two different phases separated by a quantum critical point, using as an example the Dicke model quenched from its superradiant to its normal phase. We extract the distribution of the work from the Loschmidt amplitude an...
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| Format: | Article |
| Language: | English |
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American Physical Society
2018
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| Online Access: | https://eprints.nottingham.ac.uk/55636/ |
| _version_ | 1848799194831126528 |
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| author | Rotondo, Pietro Minář, Jiří Garrahan, Juan P. Lesanovsky, Igor Marcuzzi, Matteo |
| author_facet | Rotondo, Pietro Minář, Jiří Garrahan, Juan P. Lesanovsky, Igor Marcuzzi, Matteo |
| author_sort | Rotondo, Pietro |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We investigate large deviations of the work performed in a quantum quench across two different phases separated by a quantum critical point, using as an example the Dicke model quenched from its superradiant to its normal phase. We extract the distribution of the work from the Loschmidt amplitude and compute for both the corresponding large-deviation forms. Comparing these findings with the predictions of the classification scheme put forward in Gambassi and Silva [Phys. Rev. Lett. 109, 250602 (2012)], we are able to identify a regime which is in fact distinct to the ones identified so far: here the rate function exhibits a nonanalytical point which is a strong indication of the existence of an out-of-equilibrium phase transition in the rare fluctuations of the work. |
| first_indexed | 2025-11-14T20:31:48Z |
| format | Article |
| id | nottingham-55636 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:31:48Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-556362018-12-04T14:00:38Z https://eprints.nottingham.ac.uk/55636/ Singularities in large deviations of work in quantum quenches Rotondo, Pietro Minář, Jiří Garrahan, Juan P. Lesanovsky, Igor Marcuzzi, Matteo We investigate large deviations of the work performed in a quantum quench across two different phases separated by a quantum critical point, using as an example the Dicke model quenched from its superradiant to its normal phase. We extract the distribution of the work from the Loschmidt amplitude and compute for both the corresponding large-deviation forms. Comparing these findings with the predictions of the classification scheme put forward in Gambassi and Silva [Phys. Rev. Lett. 109, 250602 (2012)], we are able to identify a regime which is in fact distinct to the ones identified so far: here the rate function exhibits a nonanalytical point which is a strong indication of the existence of an out-of-equilibrium phase transition in the rare fluctuations of the work. American Physical Society 2018-11-16 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/55636/1/draft_b.pdf Rotondo, Pietro, Minář, Jiří, Garrahan, Juan P., Lesanovsky, Igor and Marcuzzi, Matteo (2018) Singularities in large deviations of work in quantum quenches. Physical Review B, 98 (18). ISSN 2469-9969 https://journals.aps.org/prb/abstract/10.1103/PhysRevB.98.184303 doi:10.1103/PhysRevB.98.184303 doi:10.1103/PhysRevB.98.184303 |
| spellingShingle | Rotondo, Pietro Minář, Jiří Garrahan, Juan P. Lesanovsky, Igor Marcuzzi, Matteo Singularities in large deviations of work in quantum quenches |
| title | Singularities in large deviations of work in quantum quenches |
| title_full | Singularities in large deviations of work in quantum quenches |
| title_fullStr | Singularities in large deviations of work in quantum quenches |
| title_full_unstemmed | Singularities in large deviations of work in quantum quenches |
| title_short | Singularities in large deviations of work in quantum quenches |
| title_sort | singularities in large deviations of work in quantum quenches |
| url | https://eprints.nottingham.ac.uk/55636/ https://eprints.nottingham.ac.uk/55636/ https://eprints.nottingham.ac.uk/55636/ |