Quantum Chaos, Thermodynamics and Black Hole Microstates in the mass deformed SYK model

Understand

We study various aspects of the mass deformed SYK model which can escape the interiors of pure boundary state black holes.

• SYK boundary states are given by a simple local boundary condition on the Majorana fermions and then evolved in Euclidean time in the SYK Hamiltonian.
• We study the ground state of this mass deformed SYK model in detail.
• We also use SYK boundary states as a variational approximation to the ground state of the mass deformed SYK model.