Quintessential Kination and Thermal Production of SUSY e-WIMPs
Abstract
The impact of a kination-dominated phase generated by a quintessential exponential model on the thermal abundance of Supersymmetric (SUSY) extremely Weekly Interacting Massive Particles (e-WIMPs) is investigated. For values of the quintessential energy-density parameter on the eve of nucleosynthesis close to its upper bound, we find that: (i) the gravitino constraint is totally evaded for unstable gravitinos; (ii) the thermal abundance of stable gravitinos is not sufficient to account for the cold dark matter of the universe; (iii) the thermal abundance of axinos can satisfy the cold dark matter constraint for values of the initial (``reheating'') temperature well above those required in the standard cosmology.
Keywords
Cite
@article{arxiv.0809.1982,
title = {Quintessential Kination and Thermal Production of SUSY e-WIMPs},
author = {M. E. Gomez and S. Lola and C. Pallis and J. Rodriguez-Quintero},
journal= {arXiv preprint arXiv:0809.1982},
year = {2009}
}
Comments
To appear in the proceedings of 4th International Workshop On The Dark Side Of The Universe (DSU 2008) 1-5 Jun 2008, Cairo, Egypt