Constraining SUSY GUTs and Inflation with Cosmology
Abstract
In the framework of Supersymmetric Grand Unified Theories (SUSY GUTs), the universe undergoes a cascade of symmetry breakings, during which topological defects can be formed. We address the question of the probability of cosmic string formation after a phase of hybrid inflation within a large number of models of SUSY GUTs in agreement with particle and cosmological data. We show that cosmic strings are extremely generic and should be used to relate cosmology and high energy physics. This conclusion is employed together with the WMAP CMB data to strongly constrain SUSY hybrid inflation models. F-term and D-term inflation are studied in the SUSY and minimal SUGRA framework. They are both found to agree with data but suffer from fine tuning of their superpotential coupling (\lambda \lesssim 3\times 10^(-5) or less). Mass scales of inflation are also constrained to be less than M \lesssim 3\times 10^(15) GeV.
Cite
@article{arxiv.hep-ph/0603169,
title = {Constraining SUSY GUTs and Inflation with Cosmology},
author = {Jonathan Rocher},
journal= {arXiv preprint arXiv:hep-ph/0603169},
year = {2009}
}
Comments
Based on talks given by J. Rocher at the "IAP Colloquium", Paris in july 2004, at "COSMO 04", Toronto in September 2004, at the Workshop "Quest For Unification", CERN in December 2004 and at the "Einstein's Century Meeting", Paris in june 2005. To appear in the Proceedings of the "Einstein's Century Meeting", Ed. J.-M. Alimi, A. Furzfa, AIP, Paris (2006)