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arXiv 0911.3702hep-th
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与重力和加速膨胀的非最小动力学耦合

Non-minimal Kinetic coupling to gravity and accelerated expansion

L. N. Granda

摘要:

我们研究了一个标量场与动力学项耦合到自身和曲率,作为一个暗能量的来源,并分析了这种新的耦合在加速膨胀中的作用,在大的时间。在标量场占优势的情况下,在某些情况下,标量场和势引起幂律展开,并计算了一个动力学状态方程的场方程的给定的解决方案。一个非常接近的宇宙学常数的行为被发现。

英文摘要:

We study a scalar field with kinetic term coupled to itself and to the curvature, as a source of dark energy, and analyze the role of this new coupling in the accelerated expansion at large times. In the case of scalar field dominance, the scalar field and potential giving rise to power-law expansion are found in some cases, and a dynamical equation of state is calculated for a given solution of the field equations. A behavior very close to that of the cosmological constant was found.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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