Quantum mechanics

String (physics)

Theoretical physics

Truncation (statistics)

Linguistics

Scheme (mathematics)

Supersymmetry

Philosophy

Locality

Gravitation

Spacetime

Mathematical physics

Statistics

Quantum gravity

Simple (philosophy)

Classical mechanics

Statistical physics

Physics

Mathematics

Optics

Wormhole

Quantum electrodynamics

Epistemology

Focus (optics)

Mathematical analysis

Supergravity

Quantum

Strong gravity

String theory

Physical review. D/Physical review. D.

Some recently proposed definitions of Jackiw-Teitelboim gravity and supergravities in terms of combinations of minimal string models are explored, with a focus on physics beyond the perturbative expansion in spacetime topology. While this formally involves solving infinite order non-linear differential equations, it is shown that the physics can be extracted to arbitrarily high accuracy in a simple controlled truncation scheme, using a combination of analytical and numerical methods. The non-perturbative spectral densities are explicitly computed and exhibited. The full spectral form factors, involving crucial non-perturbative contributions from wormhole geometries, are also computed and displayed, showing the non-perturbative details of the characteristic `slope', `dip', `ramp' and `plateau' features. It is emphasized that results of this kind can most likely be readily extracted for other types of JT gravity using the same methods.

Explorations of nonperturbative Jackiw-Teitelboim gravity and supergravity