Effective field theory of anisotropic inflation and beyond

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Published 12 August 2020 © 2020 IOP Publishing Ltd and Sissa Medialab
, , Citation Jinn-Ouk Gong et al JCAP08(2020)027 DOI 10.1088/1475-7516/2020/08/027

1475-7516/2020/08/027

Abstract

We develop an effective-field-theory (EFT) framework for inflation with various symmetry breaking pattern. As a prototype, we formulate anisotropic inflation from the perspective of EFT and construct an effective action of the Nambu-Goldstone bosons for the broken time translation and rotation symmetries. We also calculate the statistical anisotropy in the scalar two-point correlation function for concise examples of the effective action.

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10.1088/1475-7516/2020/08/027