13 research outputs found
Distribution of resonances for open quantum maps
We analyze simple models of classical chaotic open systems and of their
quantizations (open quantum maps on the torus). Our models are similar to
models recently studied in atomic and mesoscopic physics. They provide a
numerical confirmation of the fractal Weyl law for the density of quantum
resonances of such systems. The exponent in that law is related to the
dimension of the classical repeller (or trapped set) of the system. In a
simplified model, a rigorous argument gives the full resonance spectrum, which
satisfies the fractal Weyl law. For this model, we can also compute a quantity
characterizing the fluctuations of conductance through the system, namely the
shot noise power: the value we obtain is close to the prediction of random
matrix theory.Comment: 60 pages, no figures (numerical results are shown in other
references
Solubility Characteristics of Aromatic Compound Isomers in Supercritical Carbon Dioxide and Their Application to an Advanced Separation.
Quantum-classical correspondence via Liouville dynamics. I. Integrable systems and the chaotic spectral decomposition
Authentic student inquiry: the mismatch between the intended curriculum and the student‐experienced curriculum
Sex differences in hemispheric specialization: Hypothesis for the excess of dyslexia in boys
Diffusion in the Lorentz Gas
The Lorentz gas, a point particle making mirror-like reflections from an
extended collection of scatterers, has been a useful model of deterministic
diffusion and related statistical properties for over a century. This survey
summarises recent results, including periodic and aperiodic models, finite and
infinite horizon, external fields, smooth or polygonal obstacles, and in the
Boltzmann-Grad limit. New results are given for several moving particles and
for obstacles with flat points. Finally, a variety of applications are
presented.Comment: 28 pages, 5 figure