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

The European Physical Journal C

Yumei Huang¹  Qing Gao²  Yungui Gong² 

[1] Department of Astronomy, Beijing Normal University, 100875, Beijing, China;MOE Key Laboratory of Fundamental Quantities Measurement, School of Physics, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China;

关键词: Dark Matter;    Dark Energy;    Scalar Field;    Stable Fixed Point;    Attractor Solution;   

DOI  :  10.1140/epjc/s10052-015-3365-1

来源: Springer

【 摘 要 】

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.

【 授权许可】

CC BY