Cosmological attractors and asymptotic freedom of the inflaton field
2016; Institute of Physics; Volume: 2016; Issue: 06 Linguagem: Inglês
10.1088/1475-7516/2016/06/047
ISSN1475-7516
Autores Tópico(s)Geophysics and Gravity Measurements
ResumoWe show that the inflaton coupling to all other fields is exponentially suppressed during inflation in the cosmological α-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.
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