The Slow Gravitino
High Energy Physics - Phenomenology
2015-06-22 v1 High Energy Physics - Theory
Abstract
When the supersymmetry breaking sector is a fluid background, Lorentz invariance is broken spontaneously. The super-Higgs mechanism leads to a gravitino Lagrangian with Lorentz symmetry violating terms. We analyse the resulting field equations and constraints. We identify the physical spin 3/2 and spin 1/2 helicity states, derive their equations of motion and construct the propagator. The violation of Lorentz symmetry implies that the longitudinal mode has a non-relativistic dispersion relation, whose speed is lower than the speed of light. We briefly comment on possible implications to gravitino cosmology and phenomenology.
Cite
@article{arxiv.1407.8321,
title = {The Slow Gravitino},
author = {Karim Benakli and Luc Darmé and Yaron Oz},
journal= {arXiv preprint arXiv:1407.8321},
year = {2015}
}
Comments
24 pages