标题： 二维黑洞的熵来自微观态的计数 显示英文标题

标题： Entropy of 2D black holes from counting microstates

摘要： 我们给出了Jackiw-Teitelboim理论中黑洞解的熵的微观推导。 我们表明二维（2D）反德西特空间的渐近对称性由Virasoro代数的中心扩张生成。 利用该对称性的规范实现和Cardy公式，我们计算了二维黑洞的统计熵，结果与热力学结果一致，仅相差一个因子$\sqrt 2$。 显示英文摘要

摘要： We present a microscopical derivation of the entropy of the black hole solutions of the Jackiw-Teitelboim theory. We show that the asymptotic symmetry of two-dimensional (2D) Anti-de Sitter space is generated by a central extension of the Virasoro algebra. Using a canonical realization of this symmetry and Cardy's formula we calculate the statistical entropy of 2D black holes, which turns out to agree, up to a factor $\sqrt 2$, with the thermodynamical result.