Unitary matrix models and random partitions: Universality and multi-criticality

Abstract

The generating functions for the gauge theory observables are often represented in terms of the unitary matrix integrals. In this work, the perturbative and non-perturbative aspects of the generic multi-critical unitary matrix models are studied by adopting the integrable operator formalism, and the multi-critical generalization of the Tracy--Widom distribution in the context of random partitions. We obtain the universal results for the multi-critical model in the weak and strong coupling phases. The free energy of the instanton sector in the weak coupling regime, and the genus expansion of the free energy in the strong coupling regime are explicitly computed and the universal multi-critical phase structure of the model is explored. Finally, we apply our results in concrete examples of supersymmetric indices of gauge theories in the large $N$ limit.

arXiv comment49 pages, 1 figure

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• Interface fluctuations associated with split Fermi seas
• Gross-Witten-Wadia Phase Transition in Induced QCD on the Graph
• Classical group matrix models and universal criticality
• Universal Cusp Scaling in Random Partitions
• Asymptotics of the deformed higher order Airy-kernel determinants and applications