Spontaneous baryogenesis from asymmetric inflaton

Spontaneous baryogenesis from asymmetric inflaton

We propose a variant scenario of spontaneous baryogenesis from asymmetric inflaton based on current–current interactions between the inflaton and matter fields with a non-zero B−L charge. When the inflaton starts to oscillate around the minimum after inflation, it may lead to excitation of a CP-odd...

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Main Authors: Fuminobu Takahashi, Masaki Yamada
Format: Article
Language:English
Published: Elsevier 2016-05-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S037026931600191X
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spelling doaj-e0bb7d721c8649d6b881d87a0813bf5b2020-11-24T22:13:56ZengElsevierPhysics Letters B0370-26931873-24452016-05-01756C21622010.1016/j.physletb.2016.03.020Spontaneous baryogenesis from asymmetric inflatonFuminobu Takahashi0Masaki Yamada1Department of Physics, Tohoku University, Sendai, Miyagi 980-8578, JapanKavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, JapanWe propose a variant scenario of spontaneous baryogenesis from asymmetric inflaton based on current–current interactions between the inflaton and matter fields with a non-zero B−L charge. When the inflaton starts to oscillate around the minimum after inflation, it may lead to excitation of a CP-odd component, which induces an effective chemical potential for the B−L number through the current–current interactions. We study concrete inflation models and show that the spontaneous baryogenesis scenario can be naturally implemented in the chaotic inflation in supergravity.http://www.sciencedirect.com/science/article/pii/S037026931600191X
collection DOAJ
language English
format Article
sources DOAJ
author Fuminobu Takahashi
Masaki Yamada
spellingShingle Fuminobu Takahashi
Masaki Yamada
Spontaneous baryogenesis from asymmetric inflaton
Physics Letters B
author_facet Fuminobu Takahashi
Masaki Yamada
author_sort Fuminobu Takahashi
title Spontaneous baryogenesis from asymmetric inflaton
title_short Spontaneous baryogenesis from asymmetric inflaton
title_full Spontaneous baryogenesis from asymmetric inflaton
title_fullStr Spontaneous baryogenesis from asymmetric inflaton
title_full_unstemmed Spontaneous baryogenesis from asymmetric inflaton
title_sort spontaneous baryogenesis from asymmetric inflaton
publisher Elsevier
series Physics Letters B
issn 0370-2693
1873-2445
publishDate 2016-05-01
description We propose a variant scenario of spontaneous baryogenesis from asymmetric inflaton based on current–current interactions between the inflaton and matter fields with a non-zero B−L charge. When the inflaton starts to oscillate around the minimum after inflation, it may lead to excitation of a CP-odd component, which induces an effective chemical potential for the B−L number through the current–current interactions. We study concrete inflation models and show that the spontaneous baryogenesis scenario can be naturally implemented in the chaotic inflation in supergravity.
url http://www.sciencedirect.com/science/article/pii/S037026931600191X
work_keys_str_mv AT fuminobutakahashi spontaneousbaryogenesisfromasymmetricinflaton
AT masakiyamada spontaneousbaryogenesisfromasymmetricinflaton
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