Particle Theory Seminar: “Black Hole Interior in Unitary Gauge Construction”, Yasunori Nomura (University of California, Berkeley)

Event time: 
Tuesday, February 2, 2021 - 3:30pm to 4:30pm
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Event description: 

A quantum system with a black hole accommodates two widely different, though physically equivalent, descriptions. I will explain how these two descriptions address the tension between unitarity of black hole evolution and the existence of the interior, and I discuss relations between them. I will then focus on one of the descriptions, which I call unitary gauge construction, and discuss how it describes an evaporating black hole. We find that the formation of a black hole in this picture is signaled by the emergence of a surface possessing special dynamical properties: quantum chaos, fast scrambling, and low energy universality.
We find that these properties allow for constructing interior operators without relying on details of microscopic physics. We study how these interior operators can or cannot be extended in the space of microstates, which reveals an intrinsic ambiguity of the theory describing the interior of a black hole.
Host: David Poland (