Flat Potential for Inflaton with a Discrete $R$-invariance in Supergravity

Details Flat Potential for Inflaton with a Discrete $R$-invariance in Supergravity Flat Potential for Inflaton with a Discrete $R$-invariance in Supergravity

1994-05-20

arxiv.org/abs/hep-ph/9405337v1

Prog.Theor.Phys. 92 (1994) 437-448

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages and 1 figure(uudecoded), LaTeX, TU-458

Scientific paper

10.1143/PTP.92.437

We show that a very flat potential of inflaton required for a sufficient inflation is naturally obtained in $N=1$ supergravity by imposing a discrete $R$-invariance $Z_{n}$. Several cosmological constraints on parameters in the inflaton superpotential are derived. The reheating temperature turns out to be $(1-10^8)$GeV for the cases of $n$=3--10. Baryogenesis in this model is also discussed briefly.

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