A note on gravitational particle production in supergravity

Kazunori Nakayama

Physics Letters B (Oct 2019)

A note on gravitational particle production in supergravity

Kazunori Nakayama

Affiliations

Kazunori Nakayama: Department of Physics, Faculty of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Kavli IPMU (WPI), The University of Tokyo, Kashiwa, Chiba 277-8583, Japan; Correspondence to: Department of Physics, Faculty of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.

Journal volume & issue: Vol. 797

Abstract

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It is pointed out that the gravitational particle production rate of a scalar component of a chiral superfield in supergravity with minimal Kähler potential can be significantly suppressed compared with a minimal scalar field in non-supersymmetric Einstein gravity. This suppression is avoided for some choice of the inflaton sector and also for non-minimal Kähler potential of the chiral superfield.

Published in Physics Letters B

ISSN: 0370-2693 (Print); 1873-2445 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: https://www.sciencedirect.com/journal/physics-letters-b

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