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In Support of n-Correlation

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In this paper we examine n-correlation for either the eigenvalues of a unitary group of random matrices or for the zeros of a unitary family of L-functions in the important situation when the correlations are detected via test functions whose Fourier transforms have limited support. This problem first came to light in the work of Rudnick and Sarnak in their study of the n-correlation of zeros of a fairly general automorphic L-function. They solved the simplest instance of this problem when the total support was most severely limited, but had to work extremely hard to show their result matched random matrix theory in the appropriate limit. This is because they were comparing their result to the familiar determinantal expressions for n-correlation that arise naturally in random matrix theory. In this paper we deal with arbitrary support and show that there is another expression for the n-correlation of eigenvalues that translates easily into the number theory case and allows for immediate identification of which terms survive the restrictions placed on the support of the test function.

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Correspondence to J. B. Conrey.

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Communicated by L. Erdös

Research of the first author supported by the American Institute of Mathematics and by a grant from the National Science Foundation. The second author was sponsored by the Air Force Office of Scientific Research, Air Force Material Command, USAF, under Grant Number FA8655-10-1-3088.

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Conrey, J.B., Snaith, N.C. In Support of n-Correlation. Commun. Math. Phys. 330, 639–653 (2014).

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