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The Equation of State of an Interacting Tachyon

G. L. Alberghi·A. Tronconi
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Abstract

We examine the cosmological solutions of a tachyon field non minimally coupled to gravity through an effective Born-Infeld interacting Lagrangian with a power law potential, in order to investigate its equation of state as related to tracking properties. We find exact solutions in the case of a tachyon dominated Universe and when the dominant component of the stress energy tensor is determined by some other perfect fluid.

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G. L. Alberghi, A. Tronconi. 2005-09-06. The Equation of State of an Interacting Tachyon. https://arxiv.org/abs/hep-ph/0509044

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