Boundary Conditions in Quantum String Cosmology
High Energy Physics - Theory
2009-10-30 v2 General Relativity and Quantum Cosmology
Abstract
We discuss in detail how to consistently impose boundary conditions in quantum string cosmology. Since a classical time parameter is absent in quantum gravity, such conditions must be imposed with respect to intrinsic variables. Constructing wave packets for minisuperspace models from different tree-level string effective actions, we explain in particular the meaning of a transition between ``pre-big-bang" and ``post-big-bang" branches. This leads to a scenario different from previous considerations.
Cite
@article{arxiv.hep-th/9701035,
title = {Boundary Conditions in Quantum String Cosmology},
author = {Mariusz P. Dabrowski and Claus Kiefer},
journal= {arXiv preprint arXiv:hep-th/9701035},
year = {2009}
}
Comments
16 pages, REVTEX, minor changes, two references added