Optical problems in the electrodynamics of gyrotropic media

Eritsyan, O. S.

doi:10.1070/pu1982v025n12abeh005013

Cited by 13 publications

(1 citation statement)

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“…This general form of the eigenstates, as well as the corresponding general form (15) of the dispersion relation, can be naturally described in terms of the analogy discussed in Section II with propagation of ordinary waves in gyrotropic media [23][24][25], but of course this analogy is here of mere academic interest.…”

Section: General Casementioning

confidence: 99%

Planck-scale modifications to electrodynamics characterized by a spacelike symmetry-breaking vector

et al. 2010

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In the study of Planck-scale ("quantum-gravity-induced") violations of Lorentz symmetry, an important role was played by the deformed-electrodynamics model introduced by Myers and Pospelov. Its reliance on conventional effective quantum field theory, and its description of symmetry-violation effects simply in terms of a four-vector with a nonzero component only in the time direction, rendered it an ideal target for experimentalists and a natural concept-testing ground for many theorists. At this point however the experimental limits on the single Myers-Pospelov parameter, after improving steadily over these past few years, are "super-Planckian"; i.e. they take the model out of actual interest from a conventional quantum-gravity perspective. In light of this we here argue that it may be appropriate to move on to the next level of complexity, still with vectorial symmetry violation but adopting a generic four-vector. We also offer a preliminary characterization of the phenomenology of this more general framework, sufficient to expose a rather significant increase in complexity with respect to the original Myers-Pospelov setup. Most of these novel features are linked to the presence of spatial anisotropy, which is particularly pronounced when the symmetry-breaking vector is spacelike, and they are such that they reduce the bound-setting power of certain types of observations in astrophysics

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Section: General Casementioning

confidence: 99%