Loss of Quantum Coherence and Positivity of Energy Density in Semiclassical Quantum Gravity
| dc.creator | Kim, Sang Pyo | |
| dc.creator | Soh, Kwang-Sup | |
| dc.date | 1998-07-09 | |
| dc.date | 1998-09-04 | |
| dc.date.accessioned | 2026-07-07T03:32:31Z | |
| dc.date.available | 2026-07-07T03:32:31Z | |
| dc.description | In the semiclassical quantum gravity derived from the Wheeler-DeWitt equation, the energy density of a matter field loses quantum coherence due to the induced gauge potential from the parametric interaction with gravity in a non-static spacetime. It is further shown that the energy density takes only positive values and makes superposition principle hold true. By studying a minimal massive scalar field in a FRW spacetime background, we illustrate the positivity of energy density and obtain the classical Hamiltonian of a complex field from the energy density in coherent states. | |
| dc.description | RevTex, 6 pages, no figures | |
| dc.identifier | https://arxiv.org/abs/gr-qc/9807023 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/9807023 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/36264 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Loss of Quantum Coherence and Positivity of Energy Density in Semiclassical Quantum Gravity | |
| dc.type | text |