English

Degenerate operators in JT and Liouville (super)gravity

High Energy Physics - Theory 2021-05-04 v3

Abstract

We derive explicit expressions for a specific subclass of Jackiw-Teitelboim (JT) gravity bilocal correlators, corresponding to degenerate Virasoro representations. On the disk, these degenerate correlators are structurally simple, and they allow us to shed light on the 1/C Schwarzian bilocal perturbation series. In particular, we prove that the series is asymptotic for generic weight hN/2h\notin - \mathbb{N}/2. Inspired by its minimal string ancestor, we propose an expression for higher genus corrections to the degenerate correlators. We discuss the extension to the N=1\mathcal{N}=1 super JT model. On the disk, we similarly derive properties of the 1/C super-Schwarzian perturbation series, which we independently develop as well. As a byproduct, it is shown that JT supergravity saturates the chaos bound λL=2π/β\lambda_L = 2\pi/\beta at first order in 1/C. We develop the fixed-length amplitudes of Liouville supergravity at the level of the disk partition function, the bulk one-point function and the boundary two-point functions. In particular we compute the minimal superstring fixed length boundary two-point functions, which limit to the super JT degenerate correlators. We give some comments on higher topology at the end.

Keywords

Cite

@article{arxiv.2007.00998,
  title  = {Degenerate operators in JT and Liouville (super)gravity},
  author = {Thomas G. Mertens},
  journal= {arXiv preprint arXiv:2007.00998},
  year   = {2021}
}

Comments

89 pages, v3: included appendix A.2 on degenerate crossing, rearranged and augmented sections to improve readability, added references, matches published version