Mathematics Research Centre, Queen Mary Department of Mathematics, Brunel University

"RANDOM MATRICES AND RELATED TOPICS"

Monthly Colloquia

Date and time: Friday 14 December 2001, 16:30

Location: Room M128, Department of Mathematics, Brunel University (Uxbridge)

Speaker: Dr A Garcia-Garcia (SUNY, Stony Brook)

"Almost Hermitian matrix model for critical statistics"

Abstract: We introduce a family of generalized random matrix ensembles (RME), dubbed "critical", which are capable to interpolate between Poisson and Wigner statistics of eigenvalues. It is shown that the joint distribution of eigenvalues of the models is equivalent to calculating the diagonal element of the matrix density of the Calogero- Sutherland model. This relation provides a natural generalization of the classical RME. The case of critical RME with complex eigenvalues is discussed in detail. Special attention is paid to the regime of weak non-Hermiticity.