1207.0588 (Xian Gao et al.)

Full bispectra from primordial scalar and tensor perturbations in the
most general single-field inflation model    [PDF]

Xian Gao, Tsutomu Kobayashi, Maresuke Shiraishi, Masahide Yamaguchi, Jun'ichi Yokoyama, Shuichiro Yokoyama

We compute the full bispectra, including 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.

View original: http://arxiv.org/abs/1207.0588