Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace:

Dilaton quantum cosmology in two dimensions
Mazzitelli, Francisco D.; Russo, J. G. (Jorge Guillermo)
Universitat de Barcelona
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.
General relativity (Physics)
Matèria interstel·lar
Relativitat general (Física)
Interstellar matter
(c) The American Physical Society, 1993
The American Physical Society

Mostrar el registro completo del ítem

Documentos relacionados

Otros documentos del mismo autor/a

Lombardo, Fernando C.; Mazzitelli, Francisco D.; Russo, J. G. (Jorge Guillermo)
Barranco, Alejandro; Pallante, Elisabetta; Russo, J. G. (Jorge Guillermo)
Arutyunov, G.; Russo, J. G. (Jorge Guillermo); Tseytlin, A. A.
Csàki, Csaba; Russo, J. G. (Jorge Guillermo); Sfetsos, Konstadinos; Terning, John,1962-
Csàki, Csaba; Oz, Yaron; Russo, J. G. (Jorge Guillermo); Terning, John,1962-