Full bispectra from primordial scalar and tensor perturbations in the most general single-field inflation model
Cosmology and Nongalactic Astrophysics
2015-03-20 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We compute the full bispectra, namely both auto- and cross- bispectra, of primordial curvature and tensor perturbations in the most general single-field inflation model whose scalar and gravitational equations of motion are of second order. The formulae in the limits of k-inflation and potential-driven inflation are also given. These expressions are useful for estimating the full bispectra of temperature and polarization anisotropies of the cosmic microwave background radiation.
Keywords
Cite
@article{arxiv.1207.0588,
title = {Full bispectra from primordial scalar and tensor perturbations in the most general single-field inflation model},
author = {Xian Gao and Tsutomu Kobayashi and Maresuke Shiraishi and Masahide Yamaguchi and Jun'ichi Yokoyama and Shuichiro Yokoyama},
journal= {arXiv preprint arXiv:1207.0588},
year = {2015}
}
Comments
20 pages, 5 figures, accepted to PTEP