Titlebook: Quantum Chaos — Quantum Measurement; P. Cvitanović,I. Percival,A. Wirzba Book 1992 Springer Science+Business Media Dordrecht 1992 quantum

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scoliosis

Chaotic behaviour of open quantum mechanical systemshas Poissonian spectral fluctuations. In the region of strong coupling between bound and scattering states where most of the resonances have small widths again, we find that the poles show GOE-like level statistics, typical of chaotic systems.

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Eulogy

978-90-481-4120-3Springer Science+Business Media Dordrecht 1992

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Quantum Chaos — Quantum Measurement978-94-015-7979-7Series ISSN 1389-2185

Cholagogue

The Role of Perturbation Theory in the Development of Physics 1920’s. Theoretical physics seems to have a threefold task: first to provide the foundations by solving the few problems in mechanics which can be exactly reduced to as many independent mathematical problems as degrees of freedom; second, to validate mechanics by treating dynamical systems where at

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Unbounded Quantum Diffusion and a New Class of Level Statisticsof hierarchical level clustering rather than level repulsion and appears to be universal for systems exhibiting unbounded quantum diffusion on 1d-lattices, ..(.) ∼ .. with . = . + 1. A realization of this class with . = 3/2 is a model of Bloch electrons in a magnetic field (Harper’s equation), where

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