Closed strings in Misner space: a toy model for a Big Bounce ?

Bruno Durin (1) , Boris Pioline (1, 2)

1 LPTHE - Laboratoire de Physique Théorique et Hautes Energies
2 LPTENS - Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure]

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.

Domaines: Physique des Hautes Energies - Théorie [hep-th]

Bruno Durin, Boris Pioline. Closed strings in Misner space: a toy model for a Big Bounce ?. 2005. ⟨hal-00003934v1⟩