Stringy corrections to a time-dependent background solution of string and M-Theory

Details Stringy corrections to a time-dependent background solution of string and M-Theory Stringy corrections to a time-dependent background solution of string and M-Theory

2007-04-13

arxiv.org/abs/0704.1727v1

Phys.Rev.D75:126004,2007

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, 4 figures

Scientific paper

10.1103/PhysRevD.75.126004

We consider one of the simplest time-dependent backgrounds in M-theory, describing the shrinking away of the M-theory dimension with the other spatial dimensions static. As the M-theory dimension becomes small, the situation becomes well-described by string theory in a singular cosmological background where the string coupling tends to zero but the $\alpha'$-corrections become large, near the cosmic singularity. We compute these $\alpha'$-corrections, both for the background and for linearized perturbations, in heterotic string theory, and show they may be reproduced by a map from eleven-dimensional M-theory.

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