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AuthorKnauf, Andreas. author
TitleClassical Nonintegrability, Quantum Chaos [electronic resource] : With a contribution by Viviane Baladi / by Andreas Knauf, Yakov G. Sinai, Viviane Baladi
ImprintBasel : Birkhรคuser Basel : Imprint: Birkhรคuser, 1997
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Descript VI, 102 p. 7 illus. online resource


Our DMV Seminar on 'Classical Nonintegrability, Quantum Chaos' intended to introduce students and beginning researchers to the techniques applied in noninยญ tegrable classical and quantum dynamics. Several of these lectures are collected in this volume. The basic phenomenon of nonlinear dynamics is mixing in phase space, leadยญ ing to a positive dynamical entropy and a loss of information about the initial state. The nonlinear motion in phase space gives rise to a linear action on phase space functions which in the case of iterated maps is given by a so-called transfer operator. Good mixing rates lead to a spectral gap for this operator. Similar to the use made of the Riemann zeta function in the investigation of the prime numbers, dynamical zeta functions are now being applied in nonlinear dynamics. In Chapter 2 V. Baladi first introduces dynamical zeta functions and transfer operators, illustrating and motivating these notions with a simple one-dimensional dynamical system. Then she presents a commented list of useful references, helping the newcomer to enter smoothly into this fast-developing field of research. Chapter 3 on irregular scattering and Chapter 4 on quantum chaos by A. Knauf deal with solutions of the Hamilton and the Schr6dinger equation. Scatterยญ ing by a potential force tends to be irregular if three or more scattering centres are present, and a typical phenomenon is the occurrence of a Cantor set of bounded orbits. The presence of this set influences those scattering orbits which come close


1 Introduction -- 2 Dynamical Zeta Functions -- 2.1 Introduction and Motivation -- 2.2 Commented Bibliography -- 3 Irregular Scattering -- 3.1 Notions of Classical Potential Scattering -- 3.2 Centrally Symmetric Potentials -- 3.3 Scattering by Convex Obstacles -- 3.4 Symbolic Dynamics -- 3.5 Irregular Scattering by Potentials -- 3.6 Time Delay and the Differential Cross Section -- 4 Quantum Chaos -- 4.1 Husimi Functions -- 4.2 Pseudodifferential Operators -- 4.3 Fourier Integral Operators -- 4.4 The Schnirelman Theorem -- 4.5 Further Directions -- 5 Ergodicity and Mixing -- 6 Expanding Maps -- 7 Liouville Surfaces -- Participants -- Additional Talks

Physics Mathematical physics Elementary particles (Physics) Quantum field theory Physics Elementary Particles Quantum Field Theory Mathematical Physics Mathematical Methods in Physics


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