Power-Law Inflation from the Rolling Tachyon

Abstract

Modeling the potential by an inverse square law in terms of the tachyon field ($V(T)=\beta T^{-2}$) we find exact solution for spatially flat isotropic universe.We show that for $\beta >2\sqrt{3}/3$ the model undergoes power-law inflation. A way to construct other exact solutions is specified and exemplified.

References added. Matches the version in print. To appear in PRD

References in corpus (5)

• Rolling Tachyon
• Tachyon Matter
• Cosmological Evolution of the Rolling Tachyon
• Inflation from a Tachyon Fluid?
• Brane cosmology driven by the rolling tachyon

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