Department of Physics, University of California, Davis, California 95616, USA.
Phys Rev Lett. 2015 Aug 14;115(7):071302. doi: 10.1103/PhysRevLett.115.071302. Epub 2015 Aug 13.
At the horizon of a black hole, the action of (3+1)-dimensional loop quantum gravity acquires a boundary term that is formally identical to an action for three-dimensional gravity. I show how to use this correspondence to obtain the entropy of the (3+1)-dimensional black hole from well-understood conformal field theory computations of the entropy in (2+1)-dimensional de Sitter space.
在黑洞的边缘，（3+1）-维圈量子引力的作用获得了一个边界项，该边界项在形式上与三维引力的作用相同。我展示了如何利用这种对应关系，从（2+1）-维德西特空间中，通过对（3+1）-维黑洞的熵进行的良好理解的共形场论计算，来获得（3+1）-维黑洞的熵。
