Desensitizing Inflation from the Planck Scale

Details Desensitizing Inflation from the Planck Scale Desensitizing Inflation from the Planck Scale

2010-04-21

arxiv.org/abs/1004.3801v1

Physics

High Energy Physics

High Energy Physics - Theory

34 pages, 3 figures.

Scientific paper

A new mechanism to control Planck-scale corrections to the inflationary eta parameter is proposed. A common approach to the eta problem is to impose a shift symmetry on the inflaton field. However, this symmetry has to remain unbroken by Planck-scale effects, which is a rather strong requirement on possible ultraviolet completions of the theory. In this paper, we show that the breaking of the shift symmetry by Planck-scale corrections can be systematically suppressed if the inflaton field interacts with a conformal sector. The inflaton then receives an anomalous dimension in the conformal field theory, which leads to sequestering of all dangerous high-energy corrections. We analyze a number of models where the mechanism can be seen in action. In our most detailed example we compute the exact anomalous dimensions via a-maximization and show that the eta problem can be solved using only weakly-coupled physics.

Affiliated with

Also associated with

No associations

Rating

Desensitizing Inflation from the Planck Scale 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 Desensitizing Inflation from the Planck Scale, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Desensitizing Inflation from the Planck Scale will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-458489