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arxiv: 1603.06761 · v2 · pith:PFICWLVAnew · submitted 2016-03-22 · 🧮 math-ph · math.CV· math.MP· math.PR

On bulk singularities in the random normal matrix model

classification 🧮 math-ph math.CVmath.MPmath.PR
keywords singularitybulkdistributionfunctionameur-kang-makarovcasecertainclassical
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We extend the method of rescaled Ward identities of Ameur-Kang-Makarov to study the distribution of eigenvalues close to a bulk singularity, i.e. a point in the interior of the droplet where the density of the classical equilibrium measure vanishes. We prove results to the effect that a certain "dominant part" of the Taylor expansion determines the microscopic properties near a bulk singularity. A description of the distribution is given in terms of a special entire function, which depends on the nature of the singularity (a Mittag-Leffler function in the case of a rotationally symmetric singularity).

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