PARAMETRIC S-MATRIX FLUCTUATIONS IN THE QUANTUM-THEORY OF CHAOTIC SCATTERING

Authors
MACEDO AMS
Citation
Ams. Macedo, PARAMETRIC S-MATRIX FLUCTUATIONS IN THE QUANTUM-THEORY OF CHAOTIC SCATTERING, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 50(2), 1994, pp. 180000659-180000662
Citations number
33
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
50
Issue
2
Year of publication
1994
Part
A
Pages
180000659 - 180000662
Database
ISI
SICI code
1063-651X(1994)50:2<180000659:PSFITQ>2.0.ZU;2-S
Abstract
We study the effects of an arbitrary external perturbation in the stat istical properties of the S matrix of quantum chaotic scattering syste ms in the limit of isolated resonances. We derive, using supersymmetry , an exact nonperturbative expression for the parameter dependent auto correlator of two S-matrix elements. Universality is obtained,by appro priate rescaling of the physical parameters. We propose this universal function as a signature of quantum chaos in open systems.