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arXiv 1107.0225gr-qc
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模拟宇宙学常数:非最小耦合模型中的常曲率球解

Mimicking the cosmological constant: constant curvature spherical solutions in a non-minimally coupled model

J. Páramos, O. Bertolami

摘要:

本研究的目的是描述一个完美的流体物质分布,导致一个恒定的曲率区域,由于非最小耦合的效果。这种分布表现出在星际介质中发现的范围内的密度分布和在其边界处的度量分量的适当匹配。通过将这个常曲率与宇宙学常数的值相联系,并将宇宙中不同物质源产生的球形分布叠加起来,人们就能够模拟出一个大尺度均匀的宇宙学常数解。

英文摘要:

The purpose of this study is to describe a perfect fluid matter distribution that leads to a constant curvature region, thanks to the effect of a non-minimal coupling. This distribution exhibits a density profile within the range found in the interstellar medium and an adequate matching of the metric components at its boundary. By identifying this constant curvature with the value of the cosmological constant, and superimposing the spherical distributions arising from different matter sources throughout the universe, one is able to mimic a large-scale homogeneous cosmological constant solution.

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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