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Quasiclassical Methods : The IMA Volumes in Mathematics and its Applications - Jeffrey Rauch

Quasiclassical Methods

The IMA Volumes in Mathematics and its Applications

By: Jeffrey Rauch (Editor), Barry Simon (Editor)

Hardcover Published: 3rd October 1997
ISBN: 9780387983103
Number Of Pages: 230

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This IMA Volume in Mathematics and its Applications QUASICLASSICAL METHODS is based on the proceedings of a very successful one-week workshop with the same title, which was an integral part of the 1994-1995 IMA program on "Waves and Scattering." We would like to thank Jeffrey Rauch and Barry Simon for their excellent work as organizers of the meeting. We also take this opportunity to thank the National Science Foun­ dation (NSF), the Army Research Office (ARO) and the Office of Naval Research (ONR), whose financial support made the workshop possible. A vner Friedman Robert Gulliver v PREFACE There are a large number of problems where qualitative features of a partial differential equation in an appropriate regime are determined by the behavior of an associated ordinary differential equation. The example which gives the area its name is the limit of quantum mechanical Hamil­ tonians (Schrodinger operators) as Planck's constant h goes to zero, which is determined by the corresponding classical mechanical system. A sec­ ond example is linear wave equations with highly oscillatory initial data. The solutions are described by geometric optics whose centerpiece are rays which are solutions of ordinary differential equations analogous to the clas­ sical mechanics equations in the example above. Much recent work has concerned with understanding terms beyond the leading term determined by the quasi classical limit. Two examples of this involve Weyl asymptotics and the large-Z limit of atomic Hamiltonians, both areas of current research.

Foreword
Preface
h-pseudodifferential operators and applications: An introductionp. 1
Semi-classical methods with emphasis on coherent statesp. 51
Approximative theories for large Coulomb systemsp. 89
Semiclassical analysis for the Schrodinger operator with magnetic wells (after R. Montgomery, B. Helffer-A. Mohamed)p. 99
On the asymptotic distribution of eigenvalues in gapsp. 115
Asymptotics of the ground state energy of heavy molecules in the strong magnetic fieldp. 125
Local trace formulaep. 139
A proof of the strong Scott conjecturep. 145
Lieb-Thirring inequalities for the Pauli operator in three dimensionsp. 155
Exact anharmonic quantization condition (in one dimension)p. 189
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9780387983103
ISBN-10: 0387983104
Series: The IMA Volumes in Mathematics and its Applications
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 230
Published: 3rd October 1997
Publisher: Springer-Verlag New York Inc.
Country of Publication: US
Dimensions (cm): 23.5 x 15.5  x 2.54
Weight (kg): 1.15