论文标题
非线性带电抗DE保姆黑洞的光子轨道和相变
Photon orbits and phase transition for Non-Linear charged Anti-de Sitter black holes
论文作者
论文摘要
在这项工作中，我们研究了光子球半径与带电Epym Ads黑洞的一阶相变之间的关系。通过分析，我们发现在一定条件下存在光子球半径，冲击参数，非线性YM电荷参数，温度和压力之间的非单调行为。以及光子球半径的变化和相变之前和之后的冲击参数都被视为顺序参数，其临界点附近的临界指数等于相同的值$ 1/2 $，就像普通的热系统一样。这些表明，附近可能存在重力的普遍关系，即黑洞热力学系统的临界点。此外，还研究了冲击参数对偏转角的影响。
In this work, we investigate the relationship between the photon sphere radius and the first-order phase transition for the charged EPYM AdS black hole. Through the analysis, we find with a certain condition there exist the non-monotonic behaviors between the photon sphere radius, the impact parameter, the non-linear YM charge parameter, temperature, and pressure. And both the changes of photon sphere radius and impact parameter before and after phase transition can be regarded as the order parameter, their critical exponents near the critical point are equal to the same value $1/2$, just like the ordinary thermal systems. These indicate that there maybe exists a universal relationship of gravity nearby the critical point for a black hole thermodynamical system. Furthermore, the effect of impact parameter on the deflect angle is also investigated.
