The scalar sector in the Myers-Pospelov model

Details The scalar sector in the Myers-Pospelov model The scalar sector in the Myers-Pospelov model

2008-06-12

arxiv.org/abs/0806.2166v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Published in AIP Conf.Proc.977:214-223,2008

Scientific paper

10.1063/1.2902786

We construct a perturbative expansion of the scalar sector in the Myers-Pospelov model, up to second order in the Lorentz violating parameter and taking into account its higher-order time derivative character. This expansion allows us to construct an hermitian positive-definite Hamiltonian which provides a correct basis for quantization. Demanding that the modified normal frequencies remain real requires the introduction of an upper bound in the magnitude |k| of the momentum, which is a manifestation of the effective character of the model. The free scalar propagator, including the corresponding modified dispersion relations, is also calculated to the given order, thus providing the starting point to consider radiative corrections when interactions are introduced.

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