Salvage of too slow gravitinos

Salvage of too slow gravitinos

Blog Article

Abstract Gravitinos can inherit a non-relativistic dispersion relation while propagating in a background breaking both supersymmetry and Lorentz symmetry spontaneously.This is because the longitudinal mode velocity is controlled by the Antibiotic-Induced Treatments Reveal Stress-Responsive Gene Expression in the Endangered Lichen Lobaria pulmonaria sound speed in the background.It was pointed out recently by Kolb, Long and McDonough that the production of gravitinos might diverge when this sound speed vanishes.We argue that in the framework of cosmological models with linearly spontaneously broken realised supersymmetry, where the physical fermions are combinations of the vacuum goldstino and the inflatino, the gravitino longitudinal mode has a relativistic dispersion relation and Attentional bias in competitive situations: Winner does not take all therefore avoids the catastrophic production.

We illustrate this in some explicit examples.