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北美退伍军人节(Veterans Day),12 日无更新
arXiv 0905.4259astro-ph.CO
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暗能量几何

Geometry of Dark Energy

M. D. Maia, A. J. S. Capistrano, J. S. Alcaniz, E. M. Monte

摘要:

宇宙的加速被描述为时空的外在曲率的动力学效应。通过推广已有的结果,将非本征曲率看作是一个独立的自旋为2的场,由一组类似于爱因斯坦方程的非线性方程决定。在这个框架内,我们调查了这类情况下的一些宇宙学后果,并通过对当前Ia型超新星数据进行统计分析来测试其观测可行性。

英文摘要:

The acceleration of the universe is described as a dynamical effect of the extrinsic curvature of space-time. By extending previous results, the extrinsic curvature is regarded as an independent spin-2 field, determined by a set of non-linear equations similar to Einstein's equations. In this framework, we investigate some cosmological consequences of this class of scenarios and test its observational viability by performing a statistical analysis with current type Ia Supernova data.

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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