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arXiv · 1203.2891

Revisiting metric perturbations in tensor-vector-scalar theory

Martin Feix
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Abstract

I revisit cosmological perturbations in Bekenstein's tensor-vector-scalar theory (TeVeS). Considering only scalar modes in the conformal Newtonian gauge, the extra degrees of freedom are expressed in a way suitable for studying modifications at the level of the metric potentials. Assuming a universe in the matter-dominated phase, I discuss the mechanism responsible for boosting structure growth, and confirm the vector field as its key ingredient. Using a semi-analytic approach, I further characterize the evolution of density perturbations and the potentials on sub- and superhorizon scales.

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Martin Feix. 2012-03-13. Revisiting metric perturbations in tensor-vector-scalar theory. https://doi.org/10.1103/physrevd.93.104039

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