Solvable models of quantum black holes: a review on Jackiw–Teitelboim gravity

Abstract

We review recent developments in Jackiw–Teitelboim gravity. This is a simple solvable model of quantum gravity in two dimensions (that arises e.g. from the s-wave sector of higher dimensional gravity systems with spherical symmetry). Due to its solvability, it has proven to be a fruitful toy model to analyze important questions such as the relation between black holes and chaos, the role of wormholes in black hole physics and holography, and the way in which information that falls into a black hole can be recovered.

Small Schwarzschild de Sitter black holes, quantum extremal surfaces and islands

“…For our purposes, it is a reasonable approximation to look at the s-wave sector of the black hole and consider the bulk matter as a 2-dim CFT: this enables the use of 2-dim CFT tools to study the entanglement entropy of bulk matter. So, we will consider the same dimensional reduction of the 4-dim Schwarzschild de Sitter spacetime to a 2-dim background, as in [89] (see the general reviews [132,133,134], and [135] for related discussions, as well as [136] for certain families of 2-dim cosmologies). Recalling from there, the reduction ansatz ds 2 (4) = g…”

Absorptive effects and classical black hole scattering

“…In [78] it was conjectured that the hidden sector dynamics is approximately Gaussian and that higher-point correlators factor into JHEP03(2024)015 products of 2-point functions. To test this conjecture it may be useful to perform the EFT matching in the context of a toy model where the quantum mechanics of the black hole horizon is explicitly calculable [145]. We leave this and other important open questions to future work.…”

Small Schwarzschild de Sitter black holes, the future boundary and islands

“…For our purposes, it is a reasonable approximation to look at the s-wave sector of the black hole and consider the bulk matter as a 2-dim CFT: this enables the use of 2-dim CFT tools to study the entanglement entropy of bulk matter. So, we will consider the same dimensional reduction of the 4-dim Schwarzschild de Sitter spacetime to a 2-dim background, as in [92] (see the general reviews [137][138][139], and [140] for related discussions, as well as [141] for certain families of 2-dim cosmologies).…”