Inflaton decay in supergravity and gravitino problem

Fuminobu Takahashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We have recently shown that, if the inflaton has a nonzero vacuum expectation value, it generically couples to any matter fields that appear in the superpotential at the tree level, and to any gauge sectors through anomalies in the supergravity. Through these processes, the inflaton decays into the supersymmetry breaking sector, producing many gravitinos. The inflaton also directly decays into a pair of the gravitinos. Taking account of these processes, we derive constraints on both inflation models and supersymmetry breaking scenarios for avoiding overproduction of the gravitinos.

Original languageEnglish
Title of host publicationKEK Cosmophysics Group Inaugural Conference - Accelerators in the Universe - Interplay between High Energy Physics and Cosmophysics
Pages57-60
Number of pages4
DOIs
Publication statusPublished - 2008 Sep 26
Externally publishedYes
EventKEK Cosmophysics Group Inaugural Conference - Accelerators in the Universe, AIU 2008 - Tsukuba, Japan
Duration: 2008 Mar 122008 Mar 14

Publication series

NameAIP Conference Proceedings
Volume1040
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherKEK Cosmophysics Group Inaugural Conference - Accelerators in the Universe, AIU 2008
CountryJapan
CityTsukuba
Period08/3/1208/3/14

Keywords

  • Gravitino
  • Inflation
  • Reheating
  • Supergravity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Takahashi, F. (2008). Inflaton decay in supergravity and gravitino problem. In KEK Cosmophysics Group Inaugural Conference - Accelerators in the Universe - Interplay between High Energy Physics and Cosmophysics (pp. 57-60). (AIP Conference Proceedings; Vol. 1040). https://doi.org/10.1063/1.2981553