Vacuum Choices and the Predictions of Inflation

Details Vacuum Choices and the Predictions of Inflation Vacuum Choices and the Predictions of Inflation

2003-03-11

arxiv.org/abs/hep-th/0303103v1

JCAP 0312:006,2003

Physics

High Energy Physics

High Energy Physics - Theory

10 two-column pages, 1 figure; uses RevTeX4

Scientific paper

10.1088/1475-7516/2003/12/006

In the presence of a short-distance cutoff, the choice of a vacuum state in an inflating, non-de Sitter universe is unavoidably ambiguous. The ambiguity is related to the time at which initial conditions for the mode functions are specified and to the way the expansion of the universe affects those initial conditions. In this paper we study the imprint of these uncertainties on the predictions of inflation. We parametrize the most general set of possible vacuum initial conditions by two phenomenological variables. We find that the generated power spectrum receives oscillatory corrections whose amplitude is proportional to the Hubble parameter over the cutoff scale. In order to further constrain the phenomenological parameters that characterize the vacuum definition, we study gravitational particle production during different cosmological epochs.

Affiliated with

Also associated with

No associations

Rating

Vacuum Choices and the Predictions of Inflation 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 Vacuum Choices and the Predictions of Inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum Choices and the Predictions of Inflation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-204628