Extrinsic time in quantum cosmology
Extrinsic time is identified in most isotropic and homogeneous cosmological models by matching it with the ideal clock-a parametrized system whose only ''degree of freedom'' is time. Once this matching is established, the cosmological models are quantized in the same way as the i...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_05562821_v52_n4_p1963_Beluardi |
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todo:paper_05562821_v52_n4_p1963_Beluardi2023-10-03T15:35:32Z Extrinsic time in quantum cosmology Beluardi, S.C. Ferraro, R. Extrinsic time is identified in most isotropic and homogeneous cosmological models by matching it with the ideal clock-a parametrized system whose only ''degree of freedom'' is time. Once this matching is established, the cosmological models are quantized in the same way as the ideal clock. The space of solutions of the Wheeler-DeWitt equation is turned into a Hilbert space by inserting a time-dependent operator in the inner product, yielding a unitary theory equivalent to the phase-space-reduced theory. © 1995 The American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562821_v52_n4_p1963_Beluardi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
Extrinsic time is identified in most isotropic and homogeneous cosmological models by matching it with the ideal clock-a parametrized system whose only ''degree of freedom'' is time. Once this matching is established, the cosmological models are quantized in the same way as the ideal clock. The space of solutions of the Wheeler-DeWitt equation is turned into a Hilbert space by inserting a time-dependent operator in the inner product, yielding a unitary theory equivalent to the phase-space-reduced theory. © 1995 The American Physical Society. |
| format |
JOUR |
| author |
Beluardi, S.C. Ferraro, R. |
| spellingShingle |
Beluardi, S.C. Ferraro, R. Extrinsic time in quantum cosmology |
| author_facet |
Beluardi, S.C. Ferraro, R. |
| author_sort |
Beluardi, S.C. |
| title |
Extrinsic time in quantum cosmology |
| title_short |
Extrinsic time in quantum cosmology |
| title_full |
Extrinsic time in quantum cosmology |
| title_fullStr |
Extrinsic time in quantum cosmology |
| title_full_unstemmed |
Extrinsic time in quantum cosmology |
| title_sort |
extrinsic time in quantum cosmology |
| url |
http://hdl.handle.net/20.500.12110/paper_05562821_v52_n4_p1963_Beluardi |
| work_keys_str_mv |
AT beluardisc extrinsictimeinquantumcosmology AT ferraror extrinsictimeinquantumcosmology |
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1807321866554048512 |