General plane wave mode functions for scalar-driven cosmology. (English) Zbl 1061.83084
Summary: We give a solution for plane wave scalar, vector and tensor mode functions in the presence of any homogeneous, isotropic and spatially flat cosmology which is driven by a single, minimally coupled scalar. The solution is obtained by rescaling the various mode functions so that they reduce, with a suitable scale factor and a suitable time variable, to those of a massless, minimally coupled scalar. We then express the general solution in terms of co-moving time and the original scale factor.
MSC:
83F05 | Relativistic cosmology |
83C25 | Approximation procedures, weak fields in general relativity and gravitational theory |