Non-perturbative effects in JT gravity from KdV equations
Abstract
It is well-known that the partition function of the Jackiw-Teitelboim (JT) gravity is obtained by an integral transformation of volumes of moduli spaces for Riemann surfaces, also known as the Weil-Petersson volumes. This fact enables us to compute the perturbative genus expansion of the partition function by solving a KdV-type non-linear partial differential equation. In this work, we find that this KdV equation also admits transseries solutions. We give a systematic algorithm to explicitly construct a one-parameter transseries solution to the KdV equation. Our approach is based on general two-dimensional topological gravity, and the results for the JT gravity are easily obtained as a special case. The results in the leading non-perturbative sector perfectly agree with another independent calculation from topological recursions in random matrices.
Keywords
Cite
@article{arxiv.2505.16433,
title = {Non-perturbative effects in JT gravity from KdV equations},
author = {Yasuyuki Hatsuda and Takaki Matsumoto and Kazumi Okuyama},
journal= {arXiv preprint arXiv:2505.16433},
year = {2025}
}