Fermion production during preheating after hybrid inflation

At the end of inflation, the coherent oscillations of the inflation field may resonantly amplify the long wavelength modes of both bosons and fermions coupled to it. We study the resonant production of both kinds of particles during preheating in a model of hybrid inflation. The coherent time evolut...

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Detalles Bibliográficos
Autores principales: Garcia-Bellido, Juan, Mollerach, Silvia, Roulet, Esteban
Formato: Articulo
Lenguaje:Inglés
Publicado: 2000
Materias:
Ciencias Exactas
Cosmology of Theories beyond the SM
Physics of the Early Universe
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/130977
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-130977
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Cosmology of Theories beyond the SM
Physics of the Early Universe
spellingShingle Ciencias Exactas
Cosmology of Theories beyond the SM
Physics of the Early Universe
Garcia-Bellido, Juan
Mollerach, Silvia
Roulet, Esteban
Fermion production during preheating after hybrid inflation
topic_facet Ciencias Exactas
Cosmology of Theories beyond the SM
Physics of the Early Universe
description At the end of inflation, the coherent oscillations of the inflation field may resonantly amplify the long wavelength modes of both bosons and fermions coupled to it. We study the resonant production of both kinds of particles during preheating in a model of hybrid inflation. The coherent time evolution of the inflation and the Higgs fields after inflation induce a very different production of fermions depending on whether they are coupled to the Higgs or to the inflation. For reasonable values of the model parameters, the fermion production through parametric resonance can be very efficient. We study the relative growth of the fermion and boson energy densities during preheating in hybrid models. During the initial stage of preheating, fermion production dominates the relative energy density, while the exponential growth of bosonic modes soon takes over.
format Articulo
Articulo
author Garcia-Bellido, Juan
Mollerach, Silvia
Roulet, Esteban
author_facet Garcia-Bellido, Juan
Mollerach, Silvia
Roulet, Esteban
author_sort Garcia-Bellido, Juan
title Fermion production during preheating after hybrid inflation
title_short Fermion production during preheating after hybrid inflation
title_full Fermion production during preheating after hybrid inflation
title_fullStr Fermion production during preheating after hybrid inflation
title_full_unstemmed Fermion production during preheating after hybrid inflation
title_sort fermion production during preheating after hybrid inflation
publishDate 2000
url http://sedici.unlp.edu.ar/handle/10915/130977
work_keys_str_mv AT garciabellidojuan fermionproductionduringpreheatingafterhybridinflation
AT mollerachsilvia fermionproductionduringpreheatingafterhybridinflation
AT rouletesteban fermionproductionduringpreheatingafterhybridinflation
bdutipo_str Repositorios
_version_ 1764820453064441859

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