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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_17518113_v40_n25_p6927_Zanella |
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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 |
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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 |
| _version_ |
1807316795720204288 |