A realisation of Lorentz algebra in Lorentz violating theory
arXiv:1206.1695 · doi:10.1140/epjc/s10052-012-2209-5
Abstract
A Lorentz non-invariant higher derivative effective action in flat spacetime, characterised by a constant vector, can be made invariant under infinitesimal Lorentz transformations by restricting the allowed field configurations. These restricted fields are defined as functions of the background vector in such a way that background dependance of the dynamics of the physical system is no longer manifest. We show here that they also provide a field basis for the realisation of Lorentz algebra and allow the construction of a Poincaré invariant symplectic two form on the covariant phase space of the theory.
arXiv commenttext body edited, reference added
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