Boundary Conditions in Quantum String Cosmology
高能物理 - 理论
2009-10-30 v2 广义相对论与量子宇宙学
摘要
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.
引用
@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}
}
备注
16 pages, REVTEX, minor changes, two references added