arXiv:hep-ph/0612152·v2·High Energy Physics — Phenomenology
Smoothly evolving Supercritical-String Dark Energy relaxes Supersymmetric-Dark-Matter Constraints
A.B. Lahanas (Athens U.)🇬🇷 · N.E. Mavromatos (King's Coll. London)🇬🇧 · D.V. Nanopoulos (Texas A and M U., HARC and Athens Academy)🇺🇸
Abstract
We show that Supercritical-String-Cosmology (SSC) off-equilibrium and time-dependent-dilaton effects lead to a smoothly evolving dark energy for the last 10 billion years in concordance with all presently available astrophysical data. Such effects dilute by a factor O (10) the supersymmetric dark matter density (neutralinos), relaxing severe WMAP 1,3 constraints on the SUSY parameter space. Thus, LHC anticipated searches/discoveries may discriminate between conventional and Supercritical-String Cosmology.
Comments: 13 pages revtex, 5 eps figures incorporated. Version to appear in Physics Lett. B, no effects on conclusions