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, Esteban Adolfo, Kandus, Alejandra
Publicado: 2015
Materias:
Cosmic magnetic fields theory
Physics of the early universe
Primordial magnetic fields
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14757516_v2015_n3_p_Calzetta
http://hdl.handle.net/20.500.12110/paper_14757516_v2015_n3_p_Calzetta
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_14757516_v2015_n3_p_Calzetta2025-07-30T18:53:38Z Non-conformal evolution of magnetic fields during reheating Calzetta, Esteban Adolfo Kandus, Alejandra 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. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14757516_v2015_n3_p_Calzetta 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, Esteban Adolfo
Kandus, Alejandra
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.
author Calzetta, Esteban Adolfo
Kandus, Alejandra
author_facet Calzetta, Esteban Adolfo
Kandus, Alejandra
author_sort Calzetta, Esteban Adolfo
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
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14757516_v2015_n3_p_Calzetta
http://hdl.handle.net/20.500.12110/paper_14757516_v2015_n3_p_Calzetta
work_keys_str_mv AT calzettaestebanadolfo nonconformalevolutionofmagneticfieldsduringreheating
AT kandusalejandra nonconformalevolutionofmagneticfieldsduringreheating
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