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arXiv 1201.0080gr-qc
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观测对标量张量理论的限制

Constraints on scalar-tensor theories from observations

Hossein Farajollahi, Amin Salehi, Mohammad Nasiri

摘要:

通过对势函数和标量场函数分别为指数形式和幂律形式两种情况的最佳拟合分析,研究了标量张量引力的动力学描述.然后对观测数据进行模型测试。结果表明,在这两种情况下,宇宙经历了一个加速膨胀期和几何等效的暗能量是与时间相关的状态方程。

英文摘要:

We study the dynamical description of scalar-tensor gravity by performing the best-fit analysis for two cases of exponential and power-law form of the potential and scalar field function coupled to the curvature. The models are then tested against observational data. The results show that in both scenarios the Universe undergoes an acceleration expansion period and the geometrical equivalent of dark energy is associated with a time-dependent equation of state.

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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