Gravitino and Polonyi production in supergravity

Andrea Addazi, Sergei V. Ketov, Maxim Yu Khlopov

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We study production of gravitino and Polonyi particles in the minimal Starobinsky-Polonyi N= 1 supergravity with inflaton belonging to a massive vector supermultiplet. Our model has only one free parameter given by the scale of spontaneous SUSY breaking triggered by Polonyi chiral superfield. The vector supermultiplet generically enters the action non-minimally, via an arbitrary real function. This function is chosen to generate the inflaton scalar potential of the Starobinsky model. Our supergravity model can be reformulated as an abelian supersymmetric gauge theory with the vector gauge superfield coupled to two (Higgs and Polonyi) chiral superfields interacting with supergravity, where the U(1) gauge symmetry is spontaneously broken. We find that Polonyi and gravitino particles are efficiently produced during inflation, and estimate their masses and the reheating temperature. After inflation, perturbative decay of inflaton also produces Polonyi particles that rapidly decay into gravitinos. As a result, a coherent picture of inflation and dark matter emerges, where the abundance of produced gravitinos after inflation fits the CMB constraints as a Super Heavy Dark Matter (SHDM) candidate. Our scenario avoids the notorous gravitino and Polonyi problems with the Big Bang Nucleosynthesis (BBN) and DM overproduction.

Original languageEnglish
Article number642
JournalEuropean Physical Journal C
Volume78
Issue number8
DOIs
Publication statusPublished - 1 Aug 2018

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gravitinos
supergravity
Gages
Nucleosynthesis
dark matter
decay
nuclear fusion
gauge theory
scalars
heating
symmetry
estimates
Temperature

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

Gravitino and Polonyi production in supergravity. / Addazi, Andrea; Ketov, Sergei V.; Khlopov, Maxim Yu.

In: European Physical Journal C, Vol. 78, No. 8, 642, 01.08.2018.

Research output: Contribution to journalArticle

Addazi, Andrea ; Ketov, Sergei V. ; Khlopov, Maxim Yu. / Gravitino and Polonyi production in supergravity. In: European Physical Journal C. 2018 ; Vol. 78, No. 8.
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