Inflation with Non-minimal Gravitational Couplings and Supergravity

Details Inflation with Non-minimal Gravitational Couplings and Supergravity Inflation with Non-minimal Gravitational Couplings and Supergravity

2009-12-14

arxiv.org/abs/0912.2718v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 1 figure

Scientific paper

We explore in the supergravity context the possibility that a Higgs scalar may drive inflation via a non-minimal coupling to gravity characterised by a large dimensionless coupling constant. We find that this scenario is not compatible with the MSSM, but that adding a singlet field (NMSSM, or a variant thereof) can very naturally give rise to slow-roll inflation. The inflaton is necessarily contained in the doublet Higgs sector and occurs in the D-flat direction of the two Higgs doublets.

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