Can Standard Model Higgs Seed the Formation of Structures in Our Universe?
Abstract
We study the Standard Model Higgs field as a source for the primordial curvature perturbation, particularly in the curvaton and modulated reheating scenario. We conclude that the Higgs cannot play as a curvaton due to the small energy density when it decays, however the modulated reheating by Higgs can be a viable scenario. In the latter case, the non-Gaussianity is inevitably generated and strongly constrains the type of potential of inflaton field and Higgs-dependent interaction term. For the quadratic potential of the inflaton field with decay rate which non-linearly depends on the Higgs vacuum expectation value, the contribution of Higgs field to the primordial curvature perturbation must be less than 8%.
Keywords
Cite
@article{arxiv.1209.2277,
title = {Can Standard Model Higgs Seed the Formation of Structures in Our Universe?},
author = {Ki-Young Choi and Qing-Guo Huang},
journal= {arXiv preprint arXiv:1209.2277},
year = {2015}
}
Comments
12 pages; version accepted for publication in Phys.Rev.D