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Title: Gravitational particle production in gravity theories with non-minimal derivative couplings

We study the gravitational production of heavy X-particles of mass of the order of the inflaton mass, produced after the end of inflation. We find that, in the presence of a derivative coupling of the inflaton field or of the X-field to the Einstein tensor, the number of gravitationally produced particles is suppressed as the strength of the coupling is increased.
Authors:
; ;  [1]
  1. Department of Physics, National Technical University of Athens, Zografou Campus GR 157 73, Athens (Greece)
Publication Date:
OSTI Identifier:
22282719
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2013; Journal Issue: 08; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGY; GRAVITATION; INFLATIONARY UNIVERSE; INFLATONS; MASS; PARTICLE PRODUCTION; TENSORS