Holography in Quantum Gravity 黑洞是个热力学体系， 是理解量子引力的窗口 hk T- 2π Area S=- (Hawking,1974) (Bekenstein,1973) 4G五Holography in Quantum Gravity S = Area 4G~ ⿊洞是个热⼒学体系, 是理解量⼦引⼒的窗⼝ T = ~ 2⇡ (Hawking,1974) (Bekenstein,1973)