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arXiv · 2008.07260

Constant roll inflation in multifield models

Merce Guerrero·Diego Rubiera-Garcia·Diego Saez-Chillon Gomez
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Abstract

Constant roll inflation is analyzed in the presence of multi scalar fields which are assumed to be described by a constant roll rate each. The different cases are studied and the corresponding potentials are reconstructed. The exact solutions are obtained, which show a similar behaviour to the single scalar field model. For one of the cases analyzed in the paper, the so-called adiabatic field also constant rolls while entropy perturbations become null, while the second case may lead to non-adiabatic perturbations. Both cases can fit well the Planck data by assuming the appropriate values for the free parameters of the models.

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BibTeXRIS

Merce Guerrero, Diego Rubiera-Garcia, Diego Saez-Chillon Gomez. 2020-08-17. Constant roll inflation in multifield models. https://doi.org/10.1103/physrevd.102.123528

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