http://arxiv.org/abs/1604.00444
We show that the inflaton coupling to all other fields is exponentially suppressed during inflation in the cosmological $\alpha$-attractor models. In the context of supergravity, this feature is a consequence of the underlying hyperbolic geometry of the moduli space which has a flat direction corresponding to the inflaton field. A combination of these factors protects the asymptotic flatness of the inflaton potential.
R. Kallosh and A. Linde
Tue, 5 Apr 16
65/67
Comments: 9 pages
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