TY - JOUR
T1 - The slow gravitino
AU - Benakli, Karim
AU - Darmé, Luc
AU - Oz, Yaron
N1 - Publisher Copyright:
© The Authors.
PY - 2014/10
Y1 - 2014/10
N2 - 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.
AB - 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.
KW - Supersymmetric effective theories
KW - Supersymmetry breaking
UR - http://www.scopus.com/inward/record.url?scp=84919787142&partnerID=8YFLogxK
U2 - 10.1007/JHEP10(2014)121
DO - 10.1007/JHEP10(2014)121
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AN - SCOPUS:84919787142
SN - 1126-6708
VL - 2014
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 10
M1 - 121
ER -