Non-conformal evolution of magnetic fields during reheating

We consider the evolution of electromagnetic fields coupled to conduction currents during the reheating era after inflation, and prior to the establishing of the proton-electron plasma. We assume that the currents may be described by second order causal hydrodynamics. The resulting theory is not con...

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Autores principales: Calzetta, E., Kandus, A.
Formato: JOUR
Materias:
Cosmic magnetic fields theory
Physics of the early universe
Primordial magnetic fields
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14757516_v2015_n3_p_Calzetta
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_14757516_v2015_n3_p_Calzetta2023-10-03T16:18:48Z Non-conformal evolution of magnetic fields during reheating Calzetta, E. Kandus, A. Cosmic magnetic fields theory Physics of the early universe Primordial magnetic fields We consider the evolution of electromagnetic fields coupled to conduction currents during the reheating era after inflation, and prior to the establishing of the proton-electron plasma. We assume that the currents may be described by second order causal hydrodynamics. The resulting theory is not conformally invariant. The expansion of the Universe produces temperature gradients which couple to the current and generally oppose Ohmic dissipation. Although the effect is not strong, it suggests that the unfolding of hy-drodynamic instabilities in these models may follow a different pattern than in first order theories, and even than in second order theories on non expanding backgrounds. © 2015 IOP Publishing Ltd and Sissa Medialab srl. Fil:Calzetta, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Kandus, A. 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_14757516_v2015_n3_p_Calzetta
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cosmic magnetic fields theory
Physics of the early universe
Primordial magnetic fields
spellingShingle Cosmic magnetic fields theory
Physics of the early universe
Primordial magnetic fields
Calzetta, E.
Kandus, A.
Non-conformal evolution of magnetic fields during reheating
topic_facet Cosmic magnetic fields theory
Physics of the early universe
Primordial magnetic fields
description We consider the evolution of electromagnetic fields coupled to conduction currents during the reheating era after inflation, and prior to the establishing of the proton-electron plasma. We assume that the currents may be described by second order causal hydrodynamics. The resulting theory is not conformally invariant. The expansion of the Universe produces temperature gradients which couple to the current and generally oppose Ohmic dissipation. Although the effect is not strong, it suggests that the unfolding of hy-drodynamic instabilities in these models may follow a different pattern than in first order theories, and even than in second order theories on non expanding backgrounds. © 2015 IOP Publishing Ltd and Sissa Medialab srl.
format JOUR
author Calzetta, E.
Kandus, A.
author_facet Calzetta, E.
Kandus, A.
author_sort Calzetta, E.
title Non-conformal evolution of magnetic fields during reheating
title_short Non-conformal evolution of magnetic fields during reheating
title_full Non-conformal evolution of magnetic fields during reheating
title_fullStr Non-conformal evolution of magnetic fields during reheating
title_full_unstemmed Non-conformal evolution of magnetic fields during reheating
title_sort non-conformal evolution of magnetic fields during reheating
url http://hdl.handle.net/20.500.12110/paper_14757516_v2015_n3_p_Calzetta
work_keys_str_mv AT calzettae nonconformalevolutionofmagneticfieldsduringreheating
AT kandusa nonconformalevolutionofmagneticfieldsduringreheating
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