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The Phase-space analysis of scalar fields with non-minimally derivative coupling

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arxiv 1412.8152 v2 pith:USVWX4LZ submitted 2014-12-28 gr-qc

Yumei Huang , Qing Gao , Yungui Gong This is my paper · ORCID
classification gr-qc
keywords couplingderivativenon-minimallyanalysisattractorcasedarkexists
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We perform a dynamical analysis for the exponential scalar field with non-minimally derivative coupling. For the quintessence case, the stable fixed points are the same with and without the non-minimally derivative coupling. For the phantom case, the attractor with dark energy domination exists for the minimal coupling only. For the non-minimally derivative coupling without the standard canonical kinetic term, only the de-Sitter attractor exists, and the dark matter solution is unstable.

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  1. Cosmology in symmetric teleparallel gravity and its dynamical system

    gr-qc 2019-06 unverdicted novelty 5.0 of 10

    In f(Q) symmetric teleparallel gravity, accelerating expansion is geometric; dynamical analysis of f(Q)=Q+αQ² yields five critical points with stable de Sitter (P4) and matter-dominated (P5) attractors.

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