Closed strings in Misner space: a toy model for a Big Bounce ?
arXiv:hep-th/0501145 · doi:10.1007/1-4020-3733-3_8
Abstract
Misner space, also known as the Lorentzian orbifold $R^{1,1}/boost$, is one of the simplest examples of a cosmological singularity in string theory. In this lecture, we review the semi-classical propagation of closed strings in this background, with a particular emphasis on the twisted sectors of the orbifold. Tree-level scattering amplitudes and the one-loop vacuum amplitude are also discussed.
30 pages, 3 figures, to appear in the Proceedings of the NATO ASI and EC Summer School ``String Theory: from Gauge Interactions to Cosmology'', Cargese, France, June 7-19, 2004