Graceful exit in quantum string cosmology

Preprint

16 February 1996

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-th/9602087

Abstract

We write an O(d,d)-covariant Wheeler-De Witt equation in the ($d^2+1$)-dimensional minisuperspace of low-energy cosmological string backgrounds. We discuss explicit examples of transitions between two duality-related cosmological phases, and we find a finite quantum transition probability even when the two phases are classically separated by a curvature singularity. This quantum approach is completely free from operator ordering ambiguities as a consequence of the duality symmetries of the string effective action.

Keywords

TRANSITION PROBABILITY
COVARIANT WHEELER
STRING COSMOLOGY
QUANTUM STRING
GRACEFUL EXIT
COSMOLOGICAL
WHEELER

All Related Versions

Version 1, 1996-02-16, ArXiv
Published version: Nuclear Physics B, 472 (1-2), 349.

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