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arXiv 2309.02853gr-qchep-th
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新广义相对论中的引力波

Gravitational Waves in New General Relativity

Alexey Golovnev, A. N. Semenova, V. P. Vandeev

AI总结:

本文通过宇宙学微扰理论方法研究无物质新广义相对论在Minkowski标架真空中的线性化方程,无需哈密顿技术即可确定初级约束数量,并给出各版本弱场极限下线性化自由度的完整计数。

摘要:

新广义相对论的模型近期引起了研究界的关注,已有部分工作研究了其动力学性质。此前此类研究的理论层面主要局限于哈密顿分析中的初级约束。然而,这远不足以计算其自由度,或判断其是否合理且可行。本文在平凡 Minkowski 标架周围研究了真空中的线性化方程。通过采用宇宙学微扰理论的方法,我们证明了无需任何真正的哈密顿技术即可非常容易地看出初级约束的数量,并在无物质的新广义相对论各个版本的弱场极限中,给出了线性化自由度的完整计数。

英文摘要:

The models of New General Relativity have recently got attention of research community, and there are some works studying their dynamical properties. The formal aspects of this investigation have been mostly restricted to the primary constraints in the Hamiltonian analysis. However, it is by far not enough for counting their degrees of freedom or judging whether they are any good and viable. In this paper we study linearised equations in vacuum around the trivial Minkowski tetrad. By taking the approach of cosmological perturbation theory we show that the numbers of primary constraints are very easily seen without any need of genuine Hamiltonian techniques, and give the full count of linearised degrees of freedom in the weak field limit of each and every version of New General Relativity without matter.

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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