Primordial non-Gaussianity in warm $k$-inflation with nonminimal derivative coupling

Xiao-Min Zhang, Zi-Xin Bai, Qing-Ze Shi +3

This paper derives the finite-inertia intrinsic thermal bispectrum in potential-free warm $k$-inflation with nonminimal derivative coupling (NMDC). On a fixed Friedmann--Lema\^ıtre…