Parametrization of Tachyon Field

Ying Shao; Yuanxing Gui

Parametrization of Tachyon Field

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arxiv gr-qc/0703112 v1 pith:LWOB43Z2 submitted 2007-03-22 gr-qc

Ying Shao , Yuanxing Gui This is my paper · ORCID

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keywords fieldtachyonequationparametrizationstateapplyassumedark

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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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Kinetic coupled tachyon: A dynamical system analysis
gr-qc 2024-12 conditional novelty 6.0 of 10

A kinetically coupled tachyon dark energy model admits a new stable scaling attractor for a range of coupling and potential parameters, providing a mechanism to keep dark energy and dark matter densities comparable.

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