Accelerating Cosmologies and Inflation from M/Superstring Theories
Abstract
We review the recent developments in obtaining accelerating cosmologies and/or inflation from higher-dimensional gravitational theories, in particular superstring theories in ten dimensions and M-theory in eleven dimensions. We first discuss why it is difficult to obtain inflationary behavior in the effective low-energy theories of superstring/M-theory, i. e. supergravity theories. We then summarize interesting solutions including S-branes that give rise to accelerating cosmologies and inflationary solutions in M-theory with higher order corrections. Other approaches to inflation in the string context are also briefly discussed.
Cite
@article{arxiv.hep-th/0411230,
title = {Accelerating Cosmologies and Inflation from M/Superstring Theories},
author = {Nobuyoshi Ohta},
journal= {arXiv preprint arXiv:hep-th/0411230},
year = {2009}
}
Comments
38 pages, Invited review to be published in IJMPA, v2: slightly expanded and refs. added, v3, v4: typos corrected, published version