Eur. Phys. J. C (2016) 76: 438
https://doi.org/10.1140/epjc/s10052-016-4283-6

Regular Article - Theoretical Physics

On SUSY restoration in single-superfield inflationary models of supergravity

¹ Department of Physics, Tokyo Metropolitan University, Minami-ohsawa 1-1, Hachioji-shi, Tokyo, 192-0397, Japan
² Kavli Institute for the Physics and Mathematics of the Universe (IPMU), The University of Tokyo, Chiba, 277-8568, Japan
³ Institute of Physics and Technology, Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050, Russian Federation
⁴ Asia Pacific Center for Theoretical Physics, Pohang, 37673, South Korea

^* e-mail: ketov@tmu.ac.jp

Received: 29 June 2016
Accepted: 23 July 2016
Published online: 4 August 2016

Abstract

We study the conditions of restoring supersymmetry (SUSY) after inflation in the supergravity-based cosmological models with a single chiral superfield and a quartic stabilization term in the Kähler potential. Some new, explicit, and viable inflationary models satisfying those conditions are found. The inflaton’s scalar superpartner is dynamically stabilized during and after inflation. We also demonstrate a possibility of having small and adjustable SUSY breaking with a tiny cosmological constant.