Supersymmetric Godel Universes in String Theory
Abstract
Supersymmetric backgrounds in string and M-theory of the Godel Universe type are studied. We find several new Godel Universes that preserve up to 20 supersymmetries. In particular, we obtain an interesting Godel Universe in M-theory with 18 supersymmetries which does not seem to be dual to a pp-wave. We show that not only T-duality but also the type-IIA/M-theory S-duality can give supersymmetric Godel Universes from pp-waves. We find solutions that can interpolate between Godel Universes and pp-waves. We also compute the string spectrum on two type IIA Godel Universes. Furthermore, we obtain the spectrum of D-branes on a Godel Universe and find the supergravity solution for a D4-brane on a Godel Universe.
Cite
@article{arxiv.hep-th/0301206,
title = {Supersymmetric Godel Universes in String Theory},
author = {Troels Harmark and Tadashi Takayanagi},
journal= {arXiv preprint arXiv:hep-th/0301206},
year = {2008}
}
Comments
latex, 36 pages, 1 figure; v2: typos corrected, refs. added, v3: typos corrected