Random unistochastic matrices

Details Random unistochastic matrices Random unistochastic matrices

2001-12-20

arxiv.org/abs/nlin/0112036v3

J. Phys. A36, 3425-3450 (2003)

Nonlinear Sciences

Chaotic Dynamics

22 latex pages, including 7 figures in ps, minor revisions

Scientific paper

10.1088/0305-4470/36/12/333

An ensemble of random unistochastic (orthostochastic) matrices is defined by taking squared moduli of elements of random unitary (orthogonal) matrices distributed according to the Haar measure on U(N) (or O(N), respectively). An ensemble of symmetric unistochastic matrices is obtained with use of unitary symmetric matrices pertaining to the circular orthogonal ensemble. We study the distribution of complex eigenvalues of bistochastic, unistochastic and ortostochastic matrices in the complex plane. We compute averages (entropy, traces) over the ensembles of unistochastic matrices and present inequalities concerning the entropies of products of bistochastic matrices.

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