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Stability Analysis in Tachyonic Potential Chameleon cosmology

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arxiv 1105.4045 v2 pith:65LMQGKA submitted 2011-05-20 gr-qc

H. Farajollahi , A. Salehi , F. Tayebi , A. Ravanpak This is my paper · ORCID
classification gr-qc
keywords modelchameleonpointspotentialstabilitytachyonicacceleratinganalysis
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We study general properties of attractors for tachyonic potential chameleon scalar-field model which possess cosmological scaling solutions. An analytic formulation is given to obtain fixed points with a discussion on their stability. The model predicts a dynamical equation of state parameter with phantom crossing behavior for an accelerating universe. We constrain the parameters of the model by best fitting with the recent data-sets from supernovae and simulated data points for redshift drift experiment generated by Monte Carlo simulations.

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Cited by 1 Pith paper

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  1. 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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