title: Universality of S-matrix correlations for deterministic plus random Hamiltonians.
abstract: We study S-matrix correlations for random matrix ensembles with a Hamiltonian H=H(0)+straight phi, in which H0 is a deterministic NxN matrix and straight phi belongs to a Gaussian random matrix ensemble. Using Efetov's supersymmetry formalism, we show that in the limit N-->infinity correlation functions of S-matrix elements are universal on the scale of the local mean level spacing: the dependence of H0 enters into these correlation functions only through the average S matrix and the average level density. This statement applies to each of the three symmetry classes (unitary, orthogonal, and symplectic).
authors: Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, Japan.
authors: N
authors: N
authors: Mae
authors: S
authors: S
authors: Iida