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arXiv · hep-th/9701035

Boundary Conditions in Quantum String Cosmology

Mariusz P. Dabrowski·Claus Kiefer
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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.

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Mariusz P. Dabrowski, Claus Kiefer. 1997-01-10. Boundary Conditions in Quantum String Cosmology. https://doi.org/10.1016/s0370-2693(97)00192-5

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