arXiv:1910.11533·v2·High Energy Physics — Theory
Effective Field Theory of Anisotropic Inflation and Beyond
Jinn-Ouk Gong🇰🇷 · Toshifumi Noumi🇯🇵 · Gary Shiu🇺🇸 · Jiro Soda🇯🇵 · Kazufumi Takahashi🇯🇵 · Masahide Yamaguchi🇯🇵
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.
Comments: 19 pages; matches published version