Effect of bulk Lorentz violation on anisotropic brane cosmologies

Details Effect of bulk Lorentz violation on anisotropic brane cosmologies Effect of bulk Lorentz violation on anisotropic brane cosmologies

Apr 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012jcap...04..026h&link_type=abstract

Journal of Cosmology and Astroparticle Physics, Issue 04, pp. 026 (2012).

Physics

Scientific paper

The effect of Lorentz invariance violation in cosmology has attracted a considerable amount of attention. By using a dynamical vector field assumed to point in the bulk direction, with Lorentz invariance holding on the brane, we extend the notation of Lorentz violation in four dimensions Jacobson to a five-dimensional brane-world. We obtain the general solution of the field equations in an exact parametric form for Bianchi type I space-time, with perfect fluid as a matter source. We show that the brane universe evolves from an isotropic/anisotropic state to an isotropic de Sitter inflationary phase at late time. The early time behavior of anisotropic brane universe is largely dependent on the Lorentz violating parameters βi,i = 1,2,3 and the equation of state of the matter, while its late time behavior is independent of these parameters.

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