Theory space of one unitary matrix model and its critical behavior associated with Argyres-Douglas theory

Abstract

The lowest critical point of one unitary matrix model with cosine plus logarithmic potential is known to correspond with the $(A_1,A_3)$ Argyres-Douglas (AD) theory and its double scaling limit derives the Painlevé II equation with parameter. Here, we consider the critical points associated with all cosine potentials and determine the scaling operators, their vevs and their scaling dimensions from perturbed string equations at planar level. These dimensions agree with those of $(A_1,A_{4k-1})$ AD theory.

arXiv comment21 pages, reference added

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