Statistics ofS-matrix poles for chaotic systems with broken time reversal invariance: A conjecture

Abstract

In the framework of a random matrix description of chaotic quantum scattering the positions of $S$-matrix poles are given by complex eigenvalues ${Z}_{i}$ of an effective non-Hermitian random-matrix Hamiltonian. We put forward a conjecture on statistics of ${Z}_{i}$ for systems with broken time-reversal invariance and verify that it allows to reproduce statistical characteristics of Wigner time delays known from independent calculations. We analyze the ensuing two-point statistical measures as, e.g., spectral form factor and the number variance. In addition, we find the density of complex eigenvalues of real asymmetric matrices generalizing the recent result by Efetov [Phys. Rev. B. 56, 9630 (1997)].