Initial conditions and unitarity in unimodular quantum cosmology
| dc.creator | Daughton, Alan | |
| dc.creator | Louko, Jorma | |
| dc.creator | Sorkin, Rafael D. | |
| dc.date | 1993-05-18 | |
| dc.date.accessioned | 2026-07-07T03:30:05Z | |
| dc.date.available | 2026-07-07T03:30:05Z | |
| dc.description | We consider quantization of the positive curvature Friedmann cosmology in the unimodular modification of Einstein's theory, in which the spacetime four-volume appears as an explicit time variable. The Hamiltonian admits self-adjoint extensions that give unitary evolution in the Hilbert space associated with the Schrödinger equation. The semiclassical estimate to the no-boundary wave function of Hartle and Hawking is found. If this estimate is accurate, there is a continuous flux of probability into the configuration space from vanishing three-volume, and the no-boundary wave function evolves nonunitarily. Generalizations of these results hold in a class of anisotropic cosmologies. (Talk given at the 5th Canadian Conference on General Relativity and Relativistic Astrophysics, Waterloo, Ontario, Canada, May 1993.) | |
| dc.description | 5 pages, Plain TeX, SU-GP-93/5-3 | |
| dc.identifier | https://arxiv.org/abs/gr-qc/9305016 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/9305016 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/35423 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Initial conditions and unitarity in unimodular quantum cosmology | |
| dc.type | text |