The vacuum state of quantum gravity contains large virtual masses
| dc.creator | Modanese, Giovanni | |
| dc.date | 2006-05-09 | |
| dc.date | 2007-02-27 | |
| dc.date.accessioned | 2026-07-07T10:26:37Z | |
| dc.date.available | 2026-07-07T10:26:37Z | |
| dc.description | In the functional integral approach to quantum gravity, the quantum configurations are usually treated to order hbar through a stationary phase approximation around the saddle point of the action where spacetime is flat. We show that from this point a "level line" in functional space departs, which comprises a family of static non-flat metrics with zero scalar curvature, depending on a continuous mass parameter. Furthermore, each of these metrics can be perturbed by an arbitrary function in such a way to still satisfy the condition Int(gR)d4x=0. We thus find a set of zero-modes of the gravitational action which has non-vanishing measure in the functional space. These metrics will contribute to the functional integral as vacuum fluctuations, on the same footing as those near the saddle point. | |
| dc.description | 13 pages, 4 figures; to appear in Class. Q. Gravity | |
| dc.identifier | https://arxiv.org/abs/physics/0605076 | |
| dc.identifier | http://arxiv.org/abs/physics/0605076 | |
| dc.identifier | Class.Quant.Grav.24:1899-1910,2007 | |
| dc.identifier | doi:10.1088/0264-9381/24/8/001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/176939 | |
| dc.subject | General Physics | |
| dc.title | The vacuum state of quantum gravity contains large virtual masses | |
| dc.type | text |