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Fitting Non-Minimally Coupled Scalar Models to Gold SnIa Dataset

Mingxing Luo·Qiping Su
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Abstract

Non-minimally coupled theories of special potentials are analyzed numerically. Such theories yield equations of state $ω<-1$ and oscillations of the cosmological expansion, which are favored by the recent analysis of observations. Fitting these theories to the Gold SnIa dataset, we obtain results comparable with other models. A potential of the form $V(ϕ)=V_0e^{a_1ϕ^2}$ yields $χ^2_{min}=170.127$. Similar results are obtained for potentials of the form $V(ϕ)=V_0+a_1ϕ^n$.

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Mingxing Luo, Qiping Su. 2005-08-18. Fitting Non-Minimally Coupled Scalar Models to Gold SnIa Dataset. https://doi.org/10.1016/j.physletb.2005.08.050

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