Moving mirrors have been used for a long time as simple models for studying various properties of black hole radiation, such as the thermal spectrum and entanglement entropy. These models are typically constructed to mimic the collapse of a spherically symmetric distribution of matter in the Minkowski background. We generalize this correspondence to the case of non-trivial background geometry and consider two examples, the Schwarzschild—de Sitter black hole and the Bañados–Teitelboim–Zanelli (BTZ) black hole. In the BTZ case we were also able to show that this approach works for the spinning black hole which has only axial symmetry.

中文翻译：

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非平坦背景几何中的移动镜子和视界


移动镜长期以来一直被用作研究黑洞辐射的各种特性的简单模型，例如热谱和纠缠熵。这些模型通常是为了模拟闵可夫斯基背景中物质球对称分布的崩溃而构建的。我们将这种对应关系推广到非平凡背景几何的情况，并考虑两个例子：史瓦西-德西特黑洞和巴尼亚多斯-泰特尔博伊姆-扎内利（BTZ）黑洞。在 BTZ 案例中，我们还能够证明这种方法适用于仅具有轴对称性的旋转黑洞。