Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-12-30
JCAP 1004:015,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, LaTeX, additional discussion. An addendum comments on recent developments
Scientific paper
10.1088/1475-7516/2010/04/015
Inflation based on scalar fields which are non-minimally coupled to gravity has been proposed as a way to unify inflation with weak-scale physics, with the inflaton being identified with the Higgs boson or other weak-scale scalar article. These models require a large non-minimal coupling xi ~ 10^{4} to have agreement with the observed density perturbations. However, it has been suggested that such models are unnatural, due to an apparent breakdown of the calculation of Higgs-Higgs scattering via graviton exchange in the Jordan frame. Here we argue that Higgs inflation models are in fact natural and that the breakdown does not imply new physics due to strong-coupling effects or unitarity breakdown, but simply a failure of perturbation theory in the Jordan frame as a calculational method. This can be understood by noting that the model is completely consistent when analysed in the Einstein frame and that scattering rates in the two frames are equal by the Equivalence Theorem for non-linear field redefinitions.
Lerner Rose N.
McDonald Janece
No associations
LandOfFree
Higgs Inflation and Naturalness 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 Higgs Inflation and Naturalness, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Higgs Inflation and Naturalness will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-34156