Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling

Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling

We discuss the cosmological gravitino problem in inflation models in which the inflaton potential is constructed from Kähler potential rather than superpotential: a representative model is D3‾-induced geometric inflation. A critical ingredient in this type of models is the coupling of the inflaton a...

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Main Authors: Fuminori Hasegawa, Kazunori Nakayama, Takahiro Terada, Yusuke Yamada
Format: Article
Language:English
Published: Elsevier 2018-02-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269317310158
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spelling doaj-f39863582b0f4295bfed046fad5ffc412020-11-24T21:56:57ZengElsevierPhysics Letters B0370-26932018-02-01777270274Gravitino problem in inflation driven by inflaton-polonyi Kähler couplingFuminori Hasegawa0Kazunori Nakayama1Takahiro Terada2Yusuke Yamada3Institute for Cosmic Ray Research, The University of Tokyo, Kashiwa, Chiba 277-8582, Japan; Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, JapanDepartment of Physics, Faculty of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, JapanTheory Center, IPNS, KEK, Tsukuba, Ibaraki 305-0801, Japan; Corresponding author.Stanford Institute for Theoretical Physics and Department of Physics, Stanford University, Stanford, CA 94305, USAWe discuss the cosmological gravitino problem in inflation models in which the inflaton potential is constructed from Kähler potential rather than superpotential: a representative model is D3‾-induced geometric inflation. A critical ingredient in this type of models is the coupling of the inflaton and Polonyi (supersymmetry-breaking) field in the Kähler potential, which is needed to build the inflaton potential. We point out the same coupling let the inflaton dominantly decay into a pair of inflatino and gravitino causing the gravitino problem. We propose some possible solutions to this problem.http://www.sciencedirect.com/science/article/pii/S0370269317310158
collection DOAJ
language English
format Article
sources DOAJ
author Fuminori Hasegawa
Kazunori Nakayama
Takahiro Terada
Yusuke Yamada
spellingShingle Fuminori Hasegawa
Kazunori Nakayama
Takahiro Terada
Yusuke Yamada
Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling
Physics Letters B
author_facet Fuminori Hasegawa
Kazunori Nakayama
Takahiro Terada
Yusuke Yamada
author_sort Fuminori Hasegawa
title Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling
title_short Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling
title_full Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling
title_fullStr Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling
title_full_unstemmed Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling
title_sort gravitino problem in inflation driven by inflaton-polonyi kähler coupling
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2018-02-01
description We discuss the cosmological gravitino problem in inflation models in which the inflaton potential is constructed from Kähler potential rather than superpotential: a representative model is D3‾-induced geometric inflation. A critical ingredient in this type of models is the coupling of the inflaton and Polonyi (supersymmetry-breaking) field in the Kähler potential, which is needed to build the inflaton potential. We point out the same coupling let the inflaton dominantly decay into a pair of inflatino and gravitino causing the gravitino problem. We propose some possible solutions to this problem.
url http://www.sciencedirect.com/science/article/pii/S0370269317310158
work_keys_str_mv AT fuminorihasegawa gravitinoproblemininflationdrivenbyinflatonpolonyikahlercoupling
AT kazunorinakayama gravitinoproblemininflationdrivenbyinflatonpolonyikahlercoupling
AT takahiroterada gravitinoproblemininflationdrivenbyinflatonpolonyikahlercoupling
AT yusukeyamada gravitinoproblemininflationdrivenbyinflatonpolonyikahlercoupling
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