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arXiv 2105.03597gr-qcmath.DG
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伪对称时空为理想流体时空的充分条件

Sufficient conditions for a pseudosymmetric spacetime to be a perfect fluid spacetime

Peibiao Zhao, Uday Chand De, Bülent Ünal, Krishnendu De

AI总结:

该研究推导伪对称时空成为理想流体时空的条件,证明伪对称广义Robertson-Walker时空是理想流体时空、共形平坦伪对称时空是广义Robertson-Walker时空,得出满足特定条件的伪对称尘埃流体为真空的结论,并构建了非平凡伪对称时空示例。

摘要:

本文旨在推导伪对称时空成为理想流体时空的条件。研究证明,伪对称的广义Robertson-Walker时空是理想流体时空。此外,我们证实共形平坦的伪对称时空是广义Robertson-Walker时空。接着,研究表明满足无宇宙学常数的爱因斯坦场方程、具有常标量曲率的伪对称尘埃流体为真空态。最后,我们构建了一个非平凡的伪对称时空示例。

英文摘要:

The aim of the present paper is to obtain the condition under which a pseudosymmetric spacetime to be a perfect fluid spacetime. It is proven that a pseudosymmetric generalized Robertson-Walker spacetime is a perfect fluid spacetime. Moreover, we establish that a conformally flat pseudosymmetric spacetime is a generalized Robertson-Walker spacetime. Next, it is shown that a pseudosymmetric dust fluid with constant scalar curvature satisfying Einstein's field equations without cosmological constant is vacuum. Finally, we construct a non-trivial example of pseudosymmetric spacetime.

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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