IAS Quantum Aspects of Black Holes Group Meeting

Abstract: Thermal correlators in large N systems equilibrate at late times, but the precise functional behavior is unknown away from holographic and free field limits. In this talk I will analyze this problem in the case of the SYK model at high temperatures. Even though this system is in the stringy regime, we will see that it shares several features with an ordinary AdS black hole. In frequency space, we will find a meromorphic ​two-point function, leading to a quasinormal mode expansion. In the time domain we will find singularities outside of the strip of analyticity, which are reminiscent of signatures of the black hole singularity in holographic correlators. Finally, I will comment on lessons for more general systems beyond SYK.