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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Detalles Bibliográficos
Autores principales: Kruczenski Gainza, Luis Martín, Oxman, Luis E., Zaldarriaga, Matias
Publicado: 1994
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v11_n9_p2317_Kruczenski
http://hdl.handle.net/20.500.12110/paper_02649381_v11_n9_p2317_Kruczenski
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02649381_v11_n9_p2317_Kruczenski
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spelling paper:paper_02649381_v11_n9_p2317_Kruczenski2023-06-08T15:23:18Z Large squeezing behaviour of cosmological entropy generation Kruczenski Gainza, Luis Martín Oxman, Luis E. Zaldarriaga, Matias 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. 1994 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v11_n9_p2317_Kruczenski 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.
author Kruczenski Gainza, Luis Martín
Oxman, Luis E.
Zaldarriaga, Matias
spellingShingle Kruczenski Gainza, Luis Martín
Oxman, Luis E.
Zaldarriaga, Matias
Large squeezing behaviour of cosmological entropy generation
author_facet Kruczenski Gainza, Luis Martín
Oxman, Luis E.
Zaldarriaga, Matias
author_sort Kruczenski Gainza, Luis Martín
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
publishDate 1994
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v11_n9_p2317_Kruczenski
http://hdl.handle.net/20.500.12110/paper_02649381_v11_n9_p2317_Kruczenski
work_keys_str_mv AT kruczenskigainzaluismartin largesqueezingbehaviourofcosmologicalentropygeneration
AT oxmanluise largesqueezingbehaviourofcosmologicalentropygeneration
AT zaldarriagamatias largesqueezingbehaviourofcosmologicalentropygeneration
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