Multigravity and Space Time Foam
| dc.creator | Garattini, Remo | |
| dc.date | 2006-12-06 | |
| dc.date.accessioned | 2026-07-07T11:01:30Z | |
| dc.date.available | 2026-07-07T11:01:30Z | |
| dc.description | We consider a multigravity approach to spacetime foam. As an application we give indications on the computation of the cosmological constant, considered as an eigenvalue of a Sturm-Liouville problem. A variational approach with Gaussian trial wave functionals is used as a method to study such a problem. We approximate the equation to one loop in a Schwarzschild background and a zeta function regularization is involved to handle with divergences. The regularization is closely related to the subtraction procedure appearing in the computation of Casimir energy in a curved background. A renormalization procedure is introduced to remove the infinities together with a renormalization group equation. | |
| dc.description | 6 pages. Talk given at IRGAC-2006 (Barcelona, July 11-15, 2006), accepted for publication in Journal of Physics A and extended version of the talk given at MG11, Berlin, 23-29 July, 2006 | |
| dc.identifier | https://arxiv.org/abs/gr-qc/0612039 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/0612039 | |
| dc.identifier | J.Phys.A40:7055-7060,2007 | |
| dc.identifier | doi:10.1088/1751-8113/40/25/S61 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/187967 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Multigravity and Space Time Foam | |
| dc.type | text |