Large squeezing behaviour of cosmological entropy generation
We consider the generation of entropy when particle pairs are created at a cosmological level. Making a reduction via the particle number basis, we compute the classical limit for the entropy generation due to the evolution of the matter field fluctuations (squeeze transformation), obtaining that it...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02649381_v11_n9_p2317_Kruczenski |
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todo:paper_02649381_v11_n9_p2317_Kruczenski2023-10-03T15:13:07Z Large squeezing behaviour of cosmological entropy generation Kruczenski, M. Oxman, L.E. Zaldarriaga, M. We consider the generation of entropy when particle pairs are created at a cosmological level. Making a reduction via the particle number basis, we compute the classical limit for the entropy generation due to the evolution of the matter field fluctuations (squeeze transformation), obtaining that it is linear in the squeeze parameter for a general class of initial states. We also discuss the dependence of the generated entropy on the coarse graining criterion. Fil:Kruczenski, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Oxman, L.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Zaldarriaga, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02649381_v11_n9_p2317_Kruczenski |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We consider the generation of entropy when particle pairs are created at a cosmological level. Making a reduction via the particle number basis, we compute the classical limit for the entropy generation due to the evolution of the matter field fluctuations (squeeze transformation), obtaining that it is linear in the squeeze parameter for a general class of initial states. We also discuss the dependence of the generated entropy on the coarse graining criterion. |
| format |
JOUR |
| author |
Kruczenski, M. Oxman, L.E. Zaldarriaga, M. |
| spellingShingle |
Kruczenski, M. Oxman, L.E. Zaldarriaga, M. Large squeezing behaviour of cosmological entropy generation |
| author_facet |
Kruczenski, M. Oxman, L.E. Zaldarriaga, M. |
| author_sort |
Kruczenski, M. |
| title |
Large squeezing behaviour of cosmological entropy generation |
| title_short |
Large squeezing behaviour of cosmological entropy generation |
| title_full |
Large squeezing behaviour of cosmological entropy generation |
| title_fullStr |
Large squeezing behaviour of cosmological entropy generation |
| title_full_unstemmed |
Large squeezing behaviour of cosmological entropy generation |
| title_sort |
large squeezing behaviour of cosmological entropy generation |
| url |
http://hdl.handle.net/20.500.12110/paper_02649381_v11_n9_p2317_Kruczenski |
| work_keys_str_mv |
AT kruczenskim largesqueezingbehaviourofcosmologicalentropygeneration AT oxmanle largesqueezingbehaviourofcosmologicalentropygeneration AT zaldarriagam largesqueezingbehaviourofcosmologicalentropygeneration |
| _version_ |
1807322224530554880 |