期刊
EUROPEAN PHYSICAL JOURNAL C
卷 78, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-018-5846-5
关键词
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资金
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [103.01-2017.12]
- Ministry of Science and Technology (MOST) of Taiwan [MOST 104-2112-M-009-020-MY3]
A set of power-law solutions of a conformal-violating Maxwell model with a non-standard scalar-vector coupling will be shown in this paper. In particular, we are interested in a coupling term of the form X(2n)F(mu v)F(mu v )with X denoting the kinetic term of the scalar field. Stability analysis indicates that the new set of anisotropic power-law solutions is unstable during the inflationary phase. The result is consistent with the cosmic no-hair conjecture. We show, however, that a set of stable slowly expanding solutions does exist for a small range of parameters lambda and n. Hence a small anisotropy can survive during the slowly expanding phase.
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