Parametrization of Tachyon Field
Ying Shao, Yuanxing Gui
TL;DR
This paper reconstructs the potential of a tachyon field in a universe dominated by matter and dark energy, using various dark energy equation of state parametrizations to understand its features.
Contribution
It introduces a method to directly reconstruct tachyon potentials from different dark energy EOS parametrizations, providing insights into their general characteristics.
Findings
Reconstructed tachyon potentials for four EOS parametrizations.
Identified common features in the resulting potentials.
Provided a framework for connecting dark energy models with tachyon field dynamics.
Abstract
We assume that universe is dominated by non-relativistic matter and tachyon field and reconstruct the potential of tachyon field directly from the effective equation of state (EOS) of dark energy. We apply the method to four known parametrization of equation of state and discuss the general features of the resulting potentials.
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