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arXiv 2103.16595gr-qcastro-ph.HEhep-th
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自旋中子星旋潮Love数的隐对称性

Hidden symmetry between rotational tidal Love numbers of spinning neutron stars

Gonçalo Castro, Leonardo Gualtieri, Paolo Pani

摘要:

致密天体的角动量与外部潮汐场之间的耦合产生了“旋转”潮汐Love数,它影响了自旋自引力体的潮汐变形能力,并在高后牛顿阶进入双星内旋的引力波形。我们提供了一个令人惊讶的“隐藏”的对称性之间的旋转潮汐爱数与相反的奇偶校验,这是属于单独的部门的扰动的数值证据。这种对称性的存在是在二元系统中潮汐相互作用的拉格朗日描述的基础上提出的,它独立于恒星的状态方程而成立。

英文摘要:

The coupling between the angular momentum of a compact object and an external tidal field gives rise to the "rotational" tidal Love numbers, which affect the tidal deformability of a spinning self-gravitating body and enter the gravitational waveform of a binary inspiral at high post-Newtonian order. We provide numerical evidence for a surprising "hidden" symmetry among the rotational tidal Love numbers with opposite parities, which are associated to perturbations belonging to separate sectors. This symmetry, whose existence had been suggested on the basis of a Lagrangian description of the tidal interaction in a binary system, holds independently of the equation of state of the star.

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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