Description |
We consider quantum quench in a deformed SYK model which permits a low energy description in terms of pseudo Nambu Goldstone modes. The bulk dual represents a gravitational collapse, represented by a bulk matter stress tensor which is discontinuous in time near the boundary. Collapse to a black hole requires the quench parameter Δϵ to exceed a certain critical value Δϵc. This corresponds to a Choptuik-like phenomenon with the Hawking temperature of the resulting black hole given by Tbh ∝ (Δϵ -Δϵc)1/2.
|