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arXiv · 1105.4045

Stability Analysis in Tachyonic Potential Chameleon cosmology

H. Farajollahi·A. Salehi·F. Tayebi·A. Ravanpak
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Abstract

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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H. Farajollahi, A. Salehi, F. Tayebi, A. Ravanpak. 2011-05-20. Stability Analysis in Tachyonic Potential Chameleon cosmology. https://doi.org/10.1088/1475-7516/2011/05/017

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