  A Lorentz-noninvariant modification of quantum electrodynamics (QED) is
considered, which has photons described by the nonbirefringent sector of
modified Maxwell theory and electrons described by the standard Dirac theory.
These photons and electrons are taken to propagate and interact in a
Schwarzschild spacetime background. For appropriate Lorentz-violating
parameters, the photons have an effective horizon lying outside the
Schwarzschild horizon. A particular type of Compton scattering event, taking
place between these two horizons (in the photonic ergoregion) and ultimately
decreasing the mass of the black hole, is found to have a nonzero probability.
These events perhaps allow for a violation of the generalized second law of
thermodynamics in the Lorentz-noninvariant theory considered.
