A CLT for Plancherel representations of the infinite-dimensional unitary group

Details A CLT for Plancherel representations of the infinite-dimensional unitary group A CLT for Plancherel representations of the infinite-dimensional unitary group

2012-03-14

arxiv.org/abs/1203.3010v1

Mathematics

Representation Theory

12 pages

Scientific paper

We study asymptotics of traces of (noncommutative) monomials formed by images of certain elements of the universal enveloping algebra of the infinite-dimensional unitary group in its Plancherel representations. We prove that they converge to (commutative) moments of a Gaussian process that can be viewed as a collection of simply yet nontrivially correlated two-dimensional Gaussian Free Fields. The limiting process has previously arisen via the global scaling limit of spectra for submatrices of Wigner Hermitian random matrices. This note is an announcement, proofs will appear elsewhere.

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