Husain-Kuchař model: Time variables and nondegenerate metrics
We study the Husain-Kuchař model by introducing a new action principle similar to the self-dual action used in the Ashtekar variables approach to quantum gravity. This new action has several interesting features, among them the presence of a scalar time variable that allows the definition of geometr...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1998 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/100568 |
| Acceso en línea: | http://hdl.handle.net/10261/100568 |
| Access Level: | acceso abierto |
| Palabra clave: | [PACS] Fundamental problems and general formalism [PACS] Canonical formalism, Lagrangians, and variational principles |
| Sumario: | We study the Husain-Kuchař model by introducing a new action principle similar to the self-dual action used in the Ashtekar variables approach to quantum gravity. This new action has several interesting features, among them the presence of a scalar time variable that allows the definition of geometric observables without adding new degrees of freedom, the appearance of a natural nondegenerate four-metric, and the possibility of coupling ordinary matter. © 1998 The American Physical Society |
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