论文标题
多种植者黑洞溶液，光子球和近乎围珠的弱幽灵高斯重力理论
Multi-horizons black hole solutions, photon sphere and perihelion shift in weak ghost-free Gauss-Bonnet theory of gravity
论文作者
论文摘要
在改良的引力理论中，从宇宙学的角度考虑了重力理论的无鬼高斯 - 骨网（GFGB）理论。检查其适用性的最佳方法可能是引起可观察到的预测，该预测给出了对理论的准则或局限性，这可以与实际观察结果形成鲜明对比。在本研究中，我们得出了GFGB的一致场方程，并通过将方程应用于球形对称的时空，我们获得了新的球形对称黑洞（BH）溶液。我们研究了这些BH溶液的物理特性，并表明获得的时空具有多疗法，而在时空中，高斯 - 骨网不变并不小。我们还研究了与这些BH溶液相关的热力学量，我们表明这些量与以前的作品中已知的数量一致。最后，我们研究了这些溶液的测量方程，这些溶液给出了光子球，我们发现弱GFGB的围绕围围移。此外，我们计算了Schwarzschild解决方案和新BH解决方案中的一阶GFGB扰动，并表明我们在过去的文献中改善并扩展了有关球形对称溶液的现有结果。
Among the modified gravitational theories, the ghost-free Gauss-Bonnet (GFGB) theory of gravity has been considered from the viewpoint of cosmology. The best way to check its applicability could be to elicit observable predicts which give guidelines or limitations on the theory, which could be contrasted with the actual observations. In the present study, we derive consistent field equations for GFGB and by applying the equations to a spherically symmetric space-time, we obtain new spherically symmetric black hole (BH) solutions. We study the physical properties of these BH solutions and show that the obtained space-time possesses multi-horizons and the Gauss-Bonnet invariants in the space-time are not trivial. We also investigate the thermodynamical quantities related to these BH solutions and we show that these quantities are consistent with what is known in the previous works. Finally, we study the geodesic equations of these solutions which give the photon spheres and we find the perihelion shift for weak GFGB. In addition, we calculate the first-order GFGB perturbations in the Schwarzschild solution and new BH solutions and show that we improve and extend existing results in the past literature on the spherically symmetric solutions.
