Large deviations for functions of two random projection matrices

Details Large deviations for functions of two random projection matrices Large deviations for functions of two random projection matrices

2005-04-21

arxiv.org/abs/math/0504435v1

Mathematics

Operator Algebras

22 pages

Scientific paper

In this paper two independent and unitarily invariant projection matrices P(N) and Q(N) are considered and the large deviation is proven for the eigenvalue density of all polynomials of them as the matrix size $N$ converges to infinity. The result is formulated on the tracial state space $TS({\cal A})$ of the universal $C^*$-algebra ${\cal A}$ generated by two selfadjoint projections. The random pair $(P(N),Q(N))$ determines a random tracial state $\tau_N \in TS({\cal A})$ and $\tau_N$ satisfies the large deviation. The rate function is in close connection with Voiculescu's free entropy defined for pairs of projections.

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