论文标题
带电广告的临界行为黑洞被替代阶段空间包围
Critical behavior of charged AdS black holes surrounded by quintessence via an alternative phase space
论文作者
论文摘要
考虑到扩展相空间中可变的宇宙常数具有重要的背景。结果表明，被带电广告的热力学行为黑洞在扩展相空间中周围包围的黑洞与范德华的流体相似。在本文中，我们表明这样一个黑洞承认了相同的关键性和范德华（Van der Waals），例如非延伸相空间中的行为。换句话说，我们将宇宙学作为固定参数保持，而是将归一化因子视为热力学变量。我们表明，有一个一阶小/大黑洞相变，类似于流体中的液体/气体相变。我们介绍了状态方程的新图片，然后计算相应的临界数量。此外，我们获得了关键指数，并表明它们与范德华系统的值相同。最后，我们研究了遥远的观察者观察到的光子球和阴影，并研究了阴影半径如何受到黑洞参数变化的影响。我们还研究了阴影半径和相变之间的关系，并计算黑洞经历二阶相变的临界阴影半径。
Considering the variable cosmological constant in the extended phase space has a significant background in the black hole physics. It was shown that the thermodynamic behavior of charged AdS black hole surrounded by the quintessence in the extended phase space is similar to the van der Waals fluid. In this paper, we indicate that such a black hole admits the same criticality and van der Waals like behavior in the non-extended phase space. In other words, we keep the cosmological constant as a fixed parameter, and instead, we consider the normalization factor as a thermodynamic variable. We show that there is a first-order small/large black hole phase transition which is analogous to the liquid/gas phase transition in fluids. We introduce a new picture of the equation of state and then we calculate the corresponding critical quantities. Moreover, we obtain the critical exponents and show that they are the same values as the van der Waals system. Finally, we study the photon sphere and the shadow observed by a distant observer and investigate how the shadow radius may be affected by the variation of black hole parameters. We also investigate the relations between shadow radius and phase transitions and calculate the critical shadow radius where the black hole undergoes a second-order phase transition.
