Birefringent light propagation on anisotropic cosmological backgrounds

Felipe A. Asenjo, Sergio A. Hojman

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

18 Citas (Scopus)

Resumen

Exact electromagnetic wave solutions to Maxwell equations on anisotropic Bianchi I cosmological spacetime backgrounds are studied. The waves evolving on Bianchi I spacetimes exhibit birefringence (associated with linear polarization) and dispersion. The particular case of a vacuum-dominated anisotropic Universe, which reproduces a Friedmann-Robertson-Walker Universe (for late times)- while, for earlier times, it matches a Kasner Universe- is studied. The electromagnetic waves do not, in general, follow null geodesics. This produces a modification of the cosmological redshift, which is then dependent on light polarization, its dispersion, and its non-null geodesic behavior. New results presented here may help to tackle some issues related to the "horizon" problem.

Idioma originalInglés
Número de artículo046003
PublicaciónPhysical Review D
Volumen96
N.º4
DOI
EstadoPublicada - 15 ago. 2017
Publicado de forma externa

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