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arxiv: 1401.6636 · v3 · pith:NDMEVX6Enew · submitted 2014-01-26 · 🧮 math-ph · math.MP

Semicircle law for a matrix ensemble with dependent entries

classification 🧮 math-ph math.MP
keywords certaincorrelationscriterioncriticalcurie-weissdistributionseigenvalueensembles
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We study ensembles of random symmetric matrices whose entries exhibit certain correlations. Examples are distributions of Curie-Weiss-type. We provide a criterion on the correlations ensuring the validity of Wigner's semicircle law for the eigenvalue distribution measure. In case of Curie-Weiss distributions this criterion applies above the critical temperature (i.e. $\beta<1$). We also investigate the largest eigenvalue of certain ensembles of Curie-Weiss type and find a transition in its behavior at the critical temperature.

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