Eternal inflation and energy conditions in de Sitter spacetime
| dc.creator | Vachaspati, Tanmay | |
| dc.date | 2003-05-22 | |
| dc.date.accessioned | 2026-07-07T02:08:34Z | |
| dc.date.available | 2026-07-07T02:08:34Z | |
| dc.description | Eternal inflation is shown to require violations of the Null Energy Condition (NEC) on superhorizon scales. With light scalar fields as the matter sources in a de Sitter background, there can be no classical or semiclassical violations of the NEC. However, quantum fluctuations of the energy-momentum tensor, described by an expectation value of four field operators, do lead to large-scale NEC violations. The backreaction of such quantum fluctuations on the inflating spacetime is generally deduced at a heuristic level and leads to the eternal inflation scenario. A rigorous treatment of the backreaction will necessarily include fluctuations of the metric, and several new effects are expected to come into play. | |
| dc.description | Talk presented at Davis Inflation Meeting, 2003 (astro-ph/0304225) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0305439 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0305439 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/6100 | |
| dc.subject | Astrophysics | |
| dc.title | Eternal inflation and energy conditions in de Sitter spacetime | |
| dc.type | text |