Dark Energy density in Split SUSY models inspired by degenerate vacua
High Energy Physics - Phenomenology
2011-04-22 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
It is well known that global symmetries protect local supersymmetry and a zero value for the cosmological constant in no--scale supergravity. The breakdown of these symmetries, which ensure the vanishing of the vacuum energy density, results in a set of degenerate vacua with broken and unbroken supersymmetry leading to the natural realisation of the multiple point principle (MPP). Assuming the degeneracy of vacua with broken and unbroken SUSY in the hidden sector we estimate the value of the cosmological constant. We argue that the observed value of the dark energy density can be reproduced in the split-SUSY scenario if the SUSY breaking scale is of the order of 10^{10} GeV.
Keywords
Cite
@article{arxiv.1012.5121,
title = {Dark Energy density in Split SUSY models inspired by degenerate vacua},
author = {C. Froggatt and R. Nevzorov and H. B. Nielsen},
journal= {arXiv preprint arXiv:1012.5121},
year = {2011}
}
Comments
Parallel talk at ICHEP 2010, Paris, France, July 2010, 4 pages