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arXiv 2401.02129gr-qc
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Einstein-Cartan 理论中的引力滑移参数与引力波

Gravitational Slip parameter and Gravitational Waves in Einstein-Cartan theory

Maryam Ranjbar, Siamak Akhshabi, Mohsen Shadmehri

AI总结:

本文在 Einstein-Cartan 引力理论框架下研究了标量与张量宇宙学扰动的演化,计算了引力滑移参数值并证实其处于观测范围内,同时探讨了宇宙引力波演化作为引力修正的另一项度量。

摘要:

我们在 Einstein-Cartan 引力理论框架下研究了标量与张量宇宙学扰动的演化。引力滑移参数定义为 Newtonian 规范下两个标量势的比值,可用于判定引力是否被修正。我们计算了 Einstein-Cartan 宇宙学中的滑移参数值,并表明其处于观测范围内。我们还讨论了宇宙引力波的演化,作为引力修正的另一项度量。

英文摘要:

We study the evolution of scalar and tensor cosmological perturbations in the framework of the Einstein-Cartan theory of gravity. The value of the gravitational slip parameter which is defined as the ratio of the two scalar potentials in the Newtonian gauge, can be used to determine whether or not the gravity is modified. We calculate the value of slip parameter in the Einstein-Cartan cosmology and show that it falls within the observed range. We also discuss the evolution of the cosmic gravitational waves as another measure of the modification of gravity.

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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