arXivDaily arXiv每日学术速递 周一至周五更新
看起来今天可以划水了
arXiv 2111.03214gr-qcastro-ph.HE
收藏

Rastall引力下中子星的潮汐Love数

Tidal Love numbers of neutron stars in Rastall gravity

Liang Meng, Dao-Jun Liu

摘要:

利用引力波测量中子星的潮汐形变能,可以揭示其内部结构、高密度核物质状态方程和强场区引力等重要信息。本文将中子星潮汐形变的相对论理论推广到Rastall引力。在多面体模型下计算了中子星的电型和磁型四极潮汐勒夫数。结果表明,中子星在Rastall引力下的潮汐Love数明显小于在广义相对论下的Love数。我们的结果为引力修正与中子星核物质状态方程之间的简并性提供了新的证据。

英文摘要:

Gravitational-wave measurements of the tidal deformability of neutron stars could reveal important information regarding their internal structure, the equation of state of high-dense nuclear matter and gravity in strong field regime. In this work, we extend the relativistic theory of the tidal deformability of neutron stars to Rastall gravity. Both the electric-type and magnetic-type quadrupole tidal Love numbers are calculated for neutron stars in the polytrope model. It is found that neutron star's tidal Love numbers in Rastall gravity is significantly smaller than those in general relativity. Our results provide new evidence of the degeneracy between the modification of gravity and the equation of state of nuclear matter in neutron stars.

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。

↑