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Related papers: Real Second Order Freeness and Haar Orthogonal Mat…

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We show that real second order freeness appears in the study of Haar unitary and unitarily invariant random matrices when transposes are also considered. In particular we obtain the unexpected result that a unitarily invariant random matrix…

Operator Algebras · Mathematics 2014-11-25 James A. Mingo , Mihai Popa

We introduce real second-order freeness in second-order noncommutative probability spaces. We demonstrate that under this definition, three real models of random matrices, namely real Ginibre matrices, Gaussian orthogonal matrices, and real…

Operator Algebras · Mathematics 2015-03-25 C. Emily I. Redelmeier

We present a genus expansion-type expression for the expected values of products of traces of expressions involving Haar-distributed orthogonal matrices. As with other real genus expansions, nonorientable surfaces appear, in addition to the…

Probability · Mathematics 2015-11-05 C. E. I. Redelmeier

We extend the relation between random matrices and free probability theory from the level of expectations to the level of fluctuations. We show how the concept of "second order freeness", which was introduced in Part I, allows one to…

Operator Algebras · Mathematics 2007-05-23 James A. Mingo , Piotr Sniady , Roland Speicher

A fundamental result of free probability theory due to Voiculescu and subsequently refined by many authors states that conjugation by independent Haar-distributed random unitary matrices delivers asymptotic freeness. In this paper we…

Probability · Mathematics 2014-01-21 Greg W. Anderson , Brendan Farrell

We extend the relation between random matrices and free probability theory from the level of expectations to the level of all correlation functions (which are classical cumulants of traces of products of the matrices). We introduce the…

Operator Algebras · Mathematics 2007-06-13 Benoit Collins , James A. Mingo , Piotr Sniady , Roland Speicher

Asymptotic freeness of independent Haar distributed unitary matrices was discovered by Voiculescu. Many refinements have been obtained, including strong asymptotic freeness of random unitaries and strong asymptotic freeness of random…

Probability · Mathematics 2024-07-16 Charles Bordenave , Benoit Collins

In this paper, we pursue our study of asymptotic properties of families of random matrices that have a tensor structure. In previous work, the first- and second-named authors provided conditions under which tensor products of unitary random…

Probability · Mathematics 2023-10-25 Benoît Collins , Pierre Yves Gaudreau Lamarre , Camille Male

We present a definition for second-order freeness in the quaternionic case. We demonstrate that this definition on a second-order probability space is asymptotically satisfied by independent symplectically invariant quaternionic matrices.…

Functional Analysis · Mathematics 2015-04-20 C. E. I. Redelmeier

We introduce a new kind of free independence, called real infinitesimal freeness. We show that independent orthogonally invariant with infinitesimal laws are asymptotically real infinitesimally free. We introduce new cumulants, called real…

Probability · Mathematics 2026-02-18 Guillaume Cébron , James A Mingo

We prove that independent families of permutation invariant random matrices are asymptotically free over the diagonal, both in probability and in expectation, under a uniform boundedness assumption on the operator norm. We can relax the…

Probability · Mathematics 2022-04-26 Benson Au , Guillaume Cébron , Antoine Dahlqvist , Franck Gabriel , Camille Male

We prove almost sure strong asymptotic freeness of i.i.d. random unitaries with the following law: sample a Haar unitary matrix of dimension $n$ and then send this unitary into an irreducible representation of $U(n)$. The strong convergence…

Probability · Mathematics 2025-03-03 Michael Magee , Mikael de la Salle

In this paper, we are interested in sequences of q-tuple of N-by-N random matrices having a strong limiting distribution (i.e. given any non-commutative polynomial in the matrices and their conjugate transpose, its normalized trace and its…

Operator Algebras · Mathematics 2016-01-26 Benoit Collins , Camille Male

We characterize asymptotic collective behaviour of rectangular random matrices, the sizes of which tend to infinity at different rates: when embedded in a space of larger square matrices, independent rectangular random matrices are…

Operator Algebras · Mathematics 2008-03-04 Florent Benaych-Georges

Voiculescu's freeness emerges in computing the asymptotic of spectra of polynomials on $N\times N$ random matrices with eigenspaces in generic positions: they are randomly rotated with a uniform unitary random matrix $U_N$. In this article…

Probability · Mathematics 2022-07-14 Guillaume Cébron , Nicolas Gilliers

Applying the concept of matricial freeness which generalizes freeness in free probability, we have recently studied asymptotic joint distributions of symmetric blocks of Gaussian random matrices (Gaussian Symmetric Block Ensemble). This…

Operator Algebras · Mathematics 2018-05-28 Romuald Lenczewski

We present examples and diagrams illustrating the proofs appearing in "Real second-order freeness and the asymptotic real second-order freeness of several real matrix models", to which this paper is meant to be an appendix. We show how…

Probability · Mathematics 2012-04-30 C. Emily I. Redelmeier

The paper gives a general condition on permutations, condition under which a semicircular matrix is free independent, or asymptotically free independent from the semicircular matrix obtained by permuting its entries. In particular, it is…

Operator Algebras · Mathematics 2017-04-24 Mihai Popa , Zhiwei Hao

We study asymptotic infinitesimal distributions of Gaussian Unitary Ensembles with permuted entries. We show that for random uniform permutations, the asymptotically permuted GUE matrix has a null infinitesimal distribution. Moreover, we…

Probability · Mathematics 2024-09-30 M. Popa , K. Szpojankowski , P. -L. Tseng

We show that Haar measures of connected semisimple groups, embedded via a representation into a matrix space, have a homogeneous asymptotic limit when viewed from far away and appropriately rescaled. This is still true if the Haar measure…

Representation Theory · Mathematics 2007-05-23 F. Maucourant
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