Reinaldo J Gleiser et al 2003 Class. Quantum Grav. 20 4375 doi:10.1088/0264-9381/20/20/303
Reinaldo J Gleiser, Carlos N Kozameh and Florencia Parisi
Show affiliationsPresent models describing the interaction of quantum Maxwell and gravitational fields predict a breakdown of Lorentz invariance and a non-standard dispersion relation in the semiclassical approximation. Comparison with observational data, however, does not support their predictions. In this work we introduce a different set of ab initio assumptions in the canonical approach, namely that the homogeneous Maxwell equations are valid in the semiclassical approximation, and find that the resulting field equations are Lorentz invariant in the semiclassical limit. We also include a phenomenological analysis of possible effects on the propagation of light, and their dependence on energy, in a cosmological context.
11.10.Ef Lagrangian and Hamiltonian approach
Issue 20 (21 October 2003)
Received 11 April 2003
Published 12 September 2003
Reinaldo J Gleiser et al 2003 Class. Quantum Grav. 20 4375
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