论文标题
4维爱因斯坦 - 加斯 - 尼特 - 马克斯韦理论中黑洞的因果关系
Causality of black holes in 4-dimensional Einstein-Gauss-Bonnet-Maxwell theory
论文作者
论文摘要
我们将带电的黑洞溶液研究到线性化的扰动水平,以4维(4D)Einstein-Gauss-Bonnet-Maxwell理论研究。我们首先计算剪切粘度与熵密度比。然后,我们证明了大量因果结构分析如何在ADS空间中的高斯桥耦合常数上施加上限。因果关系限制了高斯 - 骨网耦合常数$α_{gb} $的价值,以$α_{gb} \ leq 0 $为$ d \ rightarrow 4 $。
We study charged black hole solutions in 4-dimensional (4D) Einstein-Gauss-Bonnet-Maxwell theory to the linearized perturbation level. We first compute the shear viscosity to entropy density ratio. We then demonstrate how bulk causal structure analysis imposes a upper bound on the Gauss-Bonnet coupling constant in the AdS space. Causality constrains the value of Gauss-Bonnet coupling constant $α_{GB}$ to be bounded by $α_{GB}\leq 0$ as $D\rightarrow 4$.