ODE/IM correspondence and the Argyres-Douglas theory

Abstract

We study the quantum spectral curve of the Argyres-Douglas theories in the Nekrasov-Sahashvili limit of the Omega-background. Using the ODE/IM correspondence we investigate the quantum integrable model corresponding to the quantum spectral curve. We show that the models for the $A_{2N}$-type theories are non-unitary coset models $(A_1{)}_1\times (A_1{)}_L/(A_1{)}_{L+1}$ at the fractional level $L=\frac{2}{2N+1}-2$, which appear in the study of the 4d/2d correspondence of $\mathcal{N}=2$ superconformal field theories. Based on the WKB analysis, we clarify the relation between the Y-functions and the quantum periods and study the exact Bohr-Sommerfeld quantization condition for the quantum periods. We also discuss the quantum spectral curves for the D and E type theories.

28 pages, 1 figure. Typos corrected, a reference is added. Published version

References in corpus (1)

• Pseudo-differential equations, and the Bethe Ansatz for the classical Lie algebras