Journal
PHYSICAL REVIEW LETTERS
Volume 85, Issue 5, Pages 968-971Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.968
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Quantized, compact graphs are excellent paradigms for quantum chaos in bounded systems. Connecting them with leads to infinity, we show that they display all the features which characterize quantum chaotic scattering. We derive exact expressions for the scattering matrix, and an exact trace formula for the density of resonances. in terms of classical orbits, analogous to the semiclassical theory of chaotic scattering. A statistical analysis of the cross sections and resonance parameters compares well with thr predictions of random matrix theory. Hence, this system is proposed ns a convenient tool to study the generic behavior of chaotic scattering systems and their semiclassical description.
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