Gasperini, M. ; Maharana, J. ; Veneziano, G. (1996) Graceful exit in quantum string cosmology Nuclear Physics - Section B: Particle Physics, Field Theory and Statistical Systems, Physical Mathematics, 472 (1-2). pp. 349-360. ISSN 0550-3213
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/055032...
Related URL: http://dx.doi.org/10.1016/0550-3213(96)00201-5
Abstract
We write an O(d,d)-covariant Wheeler-De Witt equation in the (d2 + 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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Quantum Cosmology; Wheeler-De Witt Equation; String Cosmology |
| ID Code: | 19751 |
| Deposited On: | 22 Nov 2010 11:59 |
| Last Modified: | 17 May 2016 04:14 |
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