Inflation and accelerated expansion tensor-vector-scalar cosmological solutions

Luz Maria Diaz-Rivera, Lado Samushia, and Bharat Ratra
Phys. Rev. D 73, 083503 – Published 3 April 2006

Abstract

We find exact exponentially expanding and contracting de Sitter solutions of the spatially homogeneous TeVeS cosmological equations of motion in the vacuum TeVeS model and a power law accelerated expanding solution in the presence of an additional ideal fluid with equation of state parameter 5/3<ω<1. A preliminary stability analysis shows that the expanding vacuum solution is stable, while in the ideal fluid case stability depends on model parameter values. These solutions might provide a basis for incorporating early-time inflation or late-time accelerated expansion in TeVeS cosmology.

  • Received 7 January 2006

DOI:https://doi.org/10.1103/PhysRevD.73.083503

©2006 American Physical Society

Authors & Affiliations

Luz Maria Diaz-Rivera, Lado Samushia, and Bharat Ratra

  • Department of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, Kansas 66506, USA

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Issue

Vol. 73, Iss. 8 — 15 April 2006

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