SpAcetime Foam as a Quantum Thermal Bath
An effective model for the spacetime foam is constructed in terms of nonlocal interactions in a classical background. In the weak-coupling approximation, the evolution of the low-energy density matrix is determined by a master equation that predicts loss of quantum coherence. Moreover, spacetime foa...
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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:10261/100763 |
| Acceso en línea: | http://hdl.handle.net/10261/100763 |
| Access Level: | acceso abierto |
| Palabra clave: | [PACS] Quantum gravity [PACS] Foundations, theory of measurement, miscellaneous theories [PACS] Spacetime topology, causal structure, spinor structure [PACS] Quantum aspects of black holes, evaporation, thermodynamics |
| Sumario: | An effective model for the spacetime foam is constructed in terms of nonlocal interactions in a classical background. In the weak-coupling approximation, the evolution of the low-energy density matrix is determined by a master equation that predicts loss of quantum coherence. Moreover, spacetime foam can be described by a quantum thermal field that, apart from inducing loss of coherence, gives rise to effects such as gravitational Lamb and Stark shifts as well as quantum damping in the evolution of the low-energy observables. © 1998 The American Physical Society |
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