论文标题
在旋转的虫洞周围旋转测试粒子运动
Spinning test particle motion around a rotating wormhole
论文作者
论文摘要
在这项工作中,我们研究了绕旋转虫洞周围旋转测试颗粒的运动,以这种方式延伸了Benavides-Gallego等人的先前工作。在[Phys。 Rev. D 101,No.12,124024]到一般案例。使用Mathisson-PapeTrous-Dixon方程,我们研究了旋转测试颗粒的有效电势,圆形轨道以及最内向的稳定圆形轨道(ISCO)。我们发现粒子和虫洞旋转都显着影响ISCO的位置。另一方面,类似于非旋转案例,我们还发现了有效潜力的两种可能的配置:加上和减去。此外,与非旋转虫洞中非旋转测试颗粒的运动相反,有效电位的最小值不在喉咙上,因为在非旋转虫洞中,有效电位是对称的,其最小值在喉咙上。就ISCO而言,我们发现它随着虫洞a的自旋增加而增加,而与旋转的存在降低了ISCO的值相比。最后,由于旋转粒子的动力学四弹和运动学四速度并不总是平行的,因此我们考虑了超光的结合,发现随着虫洞的旋转的增加,S的允许值变化。
In this work, we investigated the motion of spinning test particles around a rotating wormhole, extending, in this way, the previous work of Benavides-Gallego et al. in [Phys. Rev. D 101, no.12, 124024] to the general case. Using the Mathisson-Papapetrous-Dixon equations, we study the effective potential, circular orbits, and the innermost stable circular orbit (ISCO) of spinning test particles. We found that both the particle and wormhole spins affect the location of the ISCO significantly. On the other hand, Similar to the non-rotating case, we also found two possible configurations in the effective potential: plus and minus. Furthermore, the minimum value of the effective potential is not at the throat due to its spin, in contrast to the motion of the non-spinning test particles in a non-rotating wormhole, where the effective potential is symmetric, and its minimum value is at the throat. In the case of the ISCO, we found that it increases as the spin of the wormhole a increases, in contrast to black holes where the presence of spin decreases the value of the ISCO. Finally, since the dynamical four-momentum and kinematical four-velocity of the spinning particle are not always parallel, we consider the superluminal bound, finding that the allowed values of s change as the wormhole's spin a increases.