title: Statistics of resonance states in open chaotic systems: a perturbative approach.
abstract: We investigate the statistical properties of the complexness parameter which characterizes uniquely complexness (nonorthogonality) of resonance eigenstates of open chaotic systems. Specifying to the regime of weakly overlapping resonances, we apply the random matrix theory to the effective Hamiltonian formalism and derive analytically the probability distribution of the complexness parameter for two statistical ensembles describing the systems invariant under time reversal. For those with rigid spectra, we consider a Hamiltonian characterized by a picket-fence spectrum without spectral fluctuations. Then, in the more realistic case of a Hamiltonian described by the Gaussian orthogonal ensemble, we reveal and discuss the role of spectral fluctuations.
authors.affiliation: Laboratoire de Physique de la Matière Condensée, CNRS UMR 6622, Université de Nice-Sophia Antipolis, Nice, France.
authors.forename: Charles
authors.initials: C
authors.lastname: Poli
authors.forename: Dmitry V
authors.initials: DV
authors.lastname: Savin
authors.forename: Olivier
authors.initials: O
authors.lastname: Legrand
authors.forename: Fabrice
authors.initials: F
authors.lastname: Mortessagne
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D015233:Models, Statistical; D017711:Nonlinear Dynamics