Removing instability of inflation in Polonyi-Starobinsky supergravity by adding FI term

Abstract

Polonyi-Starobinsky (PS) supergravity is the N = 1 supergravity model of Starobinsky inflation with spontaneous supersymmetry breaking (after inflation) due to Polonyi superfield, and inflaton belonging to a massive vector supermultiplet. The PS model is used for an explicit realization of the (super-heavy) gravitino dark matter scenario in cosmology. We find a potential instability in this model, and offer a mechanism for its removal by adding a Fayet-Iliopoulos (FI) term.

Original language	English
Article number	1850032
Journal	Modern Physics Letters A
Volume	33
Issue number	5
DOIs	https://doi.org/10.1142/S0217732318500323
Publication status	Published - 20 Feb 2018

Keywords

Inflation
supergravity
SUSY breaking

ASJC Scopus subject areas

Nuclear and High Energy Physics
Astronomy and Astrophysics

Access to Document

10.1142/S0217732318500323

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title = "Removing instability of inflation in Polonyi-Starobinsky supergravity by adding FI term",

abstract = "Polonyi-Starobinsky (PS) supergravity is the N = 1 supergravity model of Starobinsky inflation with spontaneous supersymmetry breaking (after inflation) due to Polonyi superfield, and inflaton belonging to a massive vector supermultiplet. The PS model is used for an explicit realization of the (super-heavy) gravitino dark matter scenario in cosmology. We find a potential instability in this model, and offer a mechanism for its removal by adding a Fayet-Iliopoulos (FI) term.",

keywords = "Inflation, supergravity, SUSY breaking",

author = "Yermek Aldabergenov and Ketov, {Sergei V.}",

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AU - Ketov, Sergei V.

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N2 - Polonyi-Starobinsky (PS) supergravity is the N = 1 supergravity model of Starobinsky inflation with spontaneous supersymmetry breaking (after inflation) due to Polonyi superfield, and inflaton belonging to a massive vector supermultiplet. The PS model is used for an explicit realization of the (super-heavy) gravitino dark matter scenario in cosmology. We find a potential instability in this model, and offer a mechanism for its removal by adding a Fayet-Iliopoulos (FI) term.

AB - Polonyi-Starobinsky (PS) supergravity is the N = 1 supergravity model of Starobinsky inflation with spontaneous supersymmetry breaking (after inflation) due to Polonyi superfield, and inflaton belonging to a massive vector supermultiplet. The PS model is used for an explicit realization of the (super-heavy) gravitino dark matter scenario in cosmology. We find a potential instability in this model, and offer a mechanism for its removal by adding a Fayet-Iliopoulos (FI) term.

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KW - supergravity

KW - SUSY breaking

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