Vector Goldstone Boson and Lorentz Invariance
arXiv:hep-ph/0502011
Abstract
Spontanous symmetry breaking usually gives spin 0 Goldstone bosons for the case of internal symmetries and spin 1/2 fermions for the supersymmetry. The spontaneous breaking of higher dimensional Lorentz symmetry can give vector Goldstone boson in 4-dimension.
Talk presented at "Miami 2004: A topical conference on elementary particle physics and cosmology" Miami, Florida, Dec 15-19, 2004