Classical evolution and quantum generation in generalized gravity theories including string corrections and tachyon: Unified analyses
Abstract
We present cosmological perturbation theory based on generalized gravity theories including string theory correction terms and a tachyonic complication. The classical evolution as well as the quantum generation processes in these variety of gravity theories are presented in unified forms. These apply both to the scalar- and tensor-type perturbations. Analyses are made based on the curvature variable in two different gauge conditions often used in the literature in Einstein's gravity; these are the curvature variables in the comoving (or uniform-field) gauge and the zero-shear gauge. Applications to generalized slow-roll inflations and its consequent power spectra are derived in unified forms which include wide range of inflationary scenarios based on Einstein's gravity and others.
Keywords
Cite
@article{arxiv.gr-qc/0412126,
title = {Classical evolution and quantum generation in generalized gravity theories including string corrections and tachyon: Unified analyses},
author = {J. Hwang and H. Noh},
journal= {arXiv preprint arXiv:gr-qc/0412126},
year = {2009}
}
Comments
24 pages, no figure