Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-05-22
Astronomy and Astrophysics
Astrophysics
Talk presented at Davis Inflation Meeting, 2003 (astro-ph/0304225)
Scientific paper
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.
No associations
LandOfFree
Eternal inflation and energy conditions in de Sitter spacetime does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Eternal inflation and energy conditions in de Sitter spacetime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Eternal inflation and energy conditions in de Sitter spacetime will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-40881