Production of Massless Fermions during Inflation

We compute the one loop self energy, in a locally de Sitter background, for a massless fermion which is Yukawa-coupled to a massless, minimally coupled scalar. We then solve the modified Dirac equation resulting from inclusion of the self energy. We find faster-than-exponential growth in the fermion...

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Detalles Bibliográficos
Autores principales: Prokopec, T., Woodard, Richard P.
Lenguaje:eng
Publicado: 2003
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2003/10/059
http://cds.cern.ch/record/644121
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author Prokopec, T.
Woodard, Richard P.
author_facet Prokopec, T.
Woodard, Richard P.
author_sort Prokopec, T.
collection CERN
description We compute the one loop self energy, in a locally de Sitter background, for a massless fermion which is Yukawa-coupled to a massless, minimally coupled scalar. We then solve the modified Dirac equation resulting from inclusion of the self energy. We find faster-than-exponential growth in the fermion wave function, consistent with the production of fermions through a process in which a scalar and a fermion-anti-fermion pair are ripped out of the vacuum by inflation.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
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spelling cern-6441212023-03-14T17:06:22Zdoi:10.1088/1126-6708/2003/10/059http://cds.cern.ch/record/644121engProkopec, T.Woodard, Richard P.Production of Massless Fermions during InflationAstrophysics and AstronomyWe compute the one loop self energy, in a locally de Sitter background, for a massless fermion which is Yukawa-coupled to a massless, minimally coupled scalar. We then solve the modified Dirac equation resulting from inclusion of the self energy. We find faster-than-exponential growth in the fermion wave function, consistent with the production of fermions through a process in which a scalar and a fermion-anti-fermion pair are ripped out of the vacuum by inflation.We compute the one loop self energy, in a locally de Sitter background, for a massless fermion which is Yukawa-coupled to a massless, minimally coupled scalar. We then solve the modified Dirac equation resulting from inclusion of the self energy. We find faster-than-exponential growth in the fermion wave function, consistent with the production of fermions through a process in which a scalar and a fermion-anti-fermion pair are ripped out of the vacuum by inflation.astro-ph/0309593CERN-TH-2003-173,-HD-THEP-03-39,-UFIFT-HEP-03-21CERN-TH-2003-173HD-THEP-2003-39UFIFT-HEP-2003-21oai:cds.cern.ch:6441212003-09-22
spellingShingle Astrophysics and Astronomy
Prokopec, T.
Woodard, Richard P.
Production of Massless Fermions during Inflation
title Production of Massless Fermions during Inflation
title_full Production of Massless Fermions during Inflation
title_fullStr Production of Massless Fermions during Inflation
title_full_unstemmed Production of Massless Fermions during Inflation
title_short Production of Massless Fermions during Inflation
title_sort production of massless fermions during inflation
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1088/1126-6708/2003/10/059
http://cds.cern.ch/record/644121
work_keys_str_mv AT prokopect productionofmasslessfermionsduringinflation
AT woodardrichardp productionofmasslessfermionsduringinflation

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