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http://hdl.handle.net/2445/12478
Title: | Dilaton quantum cosmology in two dimensions |
Author: | Mazzitelli, Francisco D. Russo, J. G. (Jorge Guillermo) |
Keywords: | General relativity (Physics) Gravitació Matèria interstel·lar Cosmologia Relativitat general (Física) Gravitation Interstellar matter Cosmology |
Issue Date: | 1993 |
Publisher: | The American Physical Society |
Abstract: | We consider a renormalizable two-dimensional model of dilaton gravity coupled to a set of conformal fields as a toy model for quantum cosmology. We discuss the cosmological solutions of the model and study the effect of including the back reaction due to quantum corrections. As a result, when the matter density is below some threshold new singularities form in a weak-coupling region, which suggests that they will not be removed in the full quantum theory. We also solve the Wheeler-DeWitt equation. Depending on the quantum state of the Universe, the singularities may appear in a quantum region where the wave function is not oscillatory, i.e., when there is not a well-defined notion of classical spacetime. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.47.4490 |
It is part of: | Physical Review D, 1993, vol. 47, núm. 10, p. 4490-4497 |
URI: | http://hdl.handle.net/2445/12478 |
Related resource: | http://dx.doi.org/10.1103/PhysRevD.47.4490 |
ISSN: | 0556-2821 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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512127.pdf | 1.15 MB | Adobe PDF | View/Open |
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