Inflation and non-minimal scalar-curvature coupling in gravity and supergravity
High Energy Physics - Theory
2015-06-04 v3 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
Inflationary slow-roll dynamics in Einstein gravity with a non-minimal scalar-curvature coupling can be equivalent to that in the certain f(R) gravity theory. We review the correspondence and extend it to N=1 supergravity. The non-minimal coupling in supergravity is rewritten in terms of the standard (`minimal') N=1 matter-coupled supergravity by using curved superspace. The established equivalence between two different inflationary theories means the same inflaton scalar potential, and does not imply the same post-inflationary dynamics and reheating.
Keywords
Cite
@article{arxiv.1203.0805,
title = {Inflation and non-minimal scalar-curvature coupling in gravity and supergravity},
author = {Sergei V. Ketov and Alexei A. Starobinsky},
journal= {arXiv preprint arXiv:1203.0805},
year = {2015}
}
Comments
18 pages, no figures, LaTeX. minor changes, references added, the version published in JCAP. arXiv admin note: substantial text overlap with arXiv:1201.2239, arXiv:1011.0240