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arXiv 2104.07523gr-qc
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修正Hayward黑洞时空中的解析类时测地线

Analytical time-like geodesics in modified Hayward black hole space-time

Jian-Ping Hu, Li-Li Shi, Yu Zhang, Peng-Fei Duan

摘要:

通过对粒子测地线的分析,可以研究修正的Hayward黑洞时空的性质。通过对大质量粒子相应的有效势的详细分析,我们找到了能级所允许的所有可能的轨道。通过数值求解轨道运动方程,绘制出轨道的运动轨迹。我们的结论是,是否有逃逸轨道与$b$(角动量)。轨道运动的性质与$b$、$α$($α$与时间延迟有关)和$β$($β$与单圈量子修正有关)有关。当$b$ $<$ $4.016M$,$α$ = 0.50和$β$ = 1.00时,没有逃逸轨道。对于固定的$α$ = 0.50和$β$ = 1.00,如果$b$ $<$ $3.493M$,则只存在不稳定轨道。通过与规则Hayward黑洞的比较,利用已有的计算结果得出了一个合理的推测:修正项的引入使最内层圆轨道半径(ISCO)和相应的角动量变大.

英文摘要:

The properties of modified Hayward black hole space-time can be investigated through analyzing the particle geodesics. By means of a detailed analysis of the corresponding effective potentials for a massive particle, we find all possible orbits which are allowed by the energy levels. The trajectories of orbits are plotted by solving the equation of orbital motion numerically. We conclude that whether there is an escape orbit is associated with $b$ (angular momentum). The properties of orbital motion are related to $b$, $α$ ($α$ is associated with the time delay) and $β$ ($β$ is related to 1-loop quantum corrections). There are no escape orbits when $b$ $<$ $4.016M$, $α$ = 0.50 and $β$ = 1.00. For fixed $α$ = 0.50 and $β$ = 1.00, if $b$ $<$ $3.493M$, there only exist unstable orbits. Comparing with the regular Hayward black hole, we go for a reasonable speculation by mean of the existing calculating results that the introduction of the modified term makes the radius of the innermost circular orbit (ISCO) and the corresponding angular momentum larger.

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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