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arXiv · 1302.0129

Observational constraints on non-minimally coupled Galileon model

Mubasher Jamil·Davood Momeni·Ratbay Myrzakulov
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Abstract

As an extension of Dvali-Gabadadze-Porrati (DGP) model, the Galileon theory has been proposed to explain the "self-accelerating problem" and "ghost instability problem". In this Paper, we extend the Galileon theory by considering a non-minimally coupled Galileon scalar with gravity. The statefinder analysis, $Om(z)$ diagnostic and constraint the model parameters have been investigate , we find $Ω_\text{m0}=0.263_{-0.031}^{+0.031}$, $n=1.53_{-0.37}^{+0.21}$ (at the $95\%$ confidence level) with $χ^2_{\text{min}}=473.376$. Further we show that due to the SNe Ia + BAO data ,our model behaves like a phantom-like dark energy.

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Mubasher Jamil, Davood Momeni, Ratbay Myrzakulov. 2014-08-01. Observational constraints on non-minimally coupled Galileon model. https://doi.org/10.1140/epjc%2Fs10052-013-2347-4

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