A volume-weighted measure for eternal inflation
| dc.creator | Winitzki, Sergei | |
| dc.date | 2008-03-10 | |
| dc.date | 2008-07-10 | |
| dc.date.accessioned | 2026-07-07T11:48:58Z | |
| dc.date.available | 2026-07-07T11:48:58Z | |
| dc.description | I propose a new volume-weighted probability measure for cosmological "multiverse" scenarios involving eternal inflation. The "reheating-volume (RV) cutoff" calculates the distribution of observable quantities on a portion of the reheating hypersurface that is conditioned to be finite. The RV measure is gauge-invariant, does not suffer from the "youngness paradox," and is independent of initial conditions at the beginning of inflation. In slow-roll inflationary models with a scalar inflaton, the RV-regulated probability distributions can be obtained by solving nonlinear diffusion equations. I discuss possible applications of the new measure to "landscape" scenarios with bubble nucleation. As an illustration, I compute the predictions of the RV measure in a simple toy landscape. | |
| dc.description | Version accepted for publication in Phys.Rev | |
| dc.identifier | https://arxiv.org/abs/0803.1300 | |
| dc.identifier | http://arxiv.org/abs/0803.1300 | |
| dc.identifier | Phys.Rev.D78:043501,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.043501 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203071 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | A volume-weighted measure for eternal inflation | |
| dc.type | text |