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논문

전체
Effective field theory of anisotropic inflation and beyond
  • 공진욱; Toshifumi Noumi; Gary Shiu; 외
  • 2020-08-12
  • JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 2020 08 : 0~25
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.