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arXiv · 1711.10408

Conformal inflation with chameleon coupling

Heliudson Bernardo·Renato Costa·Horatiu Nastase·Amanda Weltman
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Abstract

We investigate the possibility that the inflaton, in particular in conformal inflation models, is also a chameleon, i.e. that it couples to the energy density of some heavy non-relativistic matter present during inflation. We find new and interesting attractor behaviours, either prolonging inflation, or changing the observables $n_s,r$, depending on the sign of the chameleon coupling exponent. We also check that the chameleon coupling with the heavy matter field strongly suppress entropy modes during inflation.

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Heliudson Bernardo, Renato Costa, Horatiu Nastase, Amanda Weltman. 2018-11-03. Conformal inflation with chameleon coupling. https://doi.org/10.1088/1475-7516%2F2019%2F04%2F027

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