A nonequilibrium renormalization group approach to turbulent reheating

We use nonequilibrium renormalization group (RG) techniques to analyse the thermalization process in quantum field theory, and, by extension, reheating after inflation. Even if at a high scale Λ the theory is described by a non-dissipative λφ4 theory, and the RG running induces nontrivial noise and...

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Autores principales: Zanella, J., Calzetta, E.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_17518113_v40_n25_p6927_Zanella
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spelling todo:paper_17518113_v40_n25_p6927_Zanella2023-10-03T16:32:20Z A nonequilibrium renormalization group approach to turbulent reheating Zanella, J. Calzetta, E. We use nonequilibrium renormalization group (RG) techniques to analyse the thermalization process in quantum field theory, and, by extension, reheating after inflation. Even if at a high scale Λ the theory is described by a non-dissipative λφ4 theory, and the RG running induces nontrivial noise and dissipation. For long wavelength and slowly varying field configurations, the noise and dissipation are white and ohmic, respectively. The theory will then tend to thermalize to an effective temperature given by the fluctuation-dissipation theorem. © 2007 IOP Publishing Ltd. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17518113_v40_n25_p6927_Zanella
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 use nonequilibrium renormalization group (RG) techniques to analyse the thermalization process in quantum field theory, and, by extension, reheating after inflation. Even if at a high scale Λ the theory is described by a non-dissipative λφ4 theory, and the RG running induces nontrivial noise and dissipation. For long wavelength and slowly varying field configurations, the noise and dissipation are white and ohmic, respectively. The theory will then tend to thermalize to an effective temperature given by the fluctuation-dissipation theorem. © 2007 IOP Publishing Ltd.
format JOUR
author Zanella, J.
Calzetta, E.
spellingShingle Zanella, J.
Calzetta, E.
A nonequilibrium renormalization group approach to turbulent reheating
author_facet Zanella, J.
Calzetta, E.
author_sort Zanella, J.
title A nonequilibrium renormalization group approach to turbulent reheating
title_short A nonequilibrium renormalization group approach to turbulent reheating
title_full A nonequilibrium renormalization group approach to turbulent reheating
title_fullStr A nonequilibrium renormalization group approach to turbulent reheating
title_full_unstemmed A nonequilibrium renormalization group approach to turbulent reheating
title_sort nonequilibrium renormalization group approach to turbulent reheating
url http://hdl.handle.net/20.500.12110/paper_17518113_v40_n25_p6927_Zanella
work_keys_str_mv AT zanellaj anonequilibriumrenormalizationgroupapproachtoturbulentreheating
AT calzettae anonequilibriumrenormalizationgroupapproachtoturbulentreheating
AT zanellaj nonequilibriumrenormalizationgroupapproachtoturbulentreheating
AT calzettae nonequilibriumrenormalizationgroupapproachtoturbulentreheating
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