(Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959)
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(Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959)
This is Volume 5 inPURE AND APPLIED PHYSICSA Series of Monographs and TextbooksConsulting Editors: H. s. w. Massey and Keith a. BruecknerA complete li (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) ist of titles in this series appears at the end of this volume.GROUP THEORYAND ITS APPLICATION TO THEQUANTUM MECHANICS OF ATOMIC SPECTRAEUGENE p. WIGNERPalmer Physical Laboratory, Princeton University Princeton, New JerseyTRANSLATED FROM THE GERMAN BYJ. J. GRIFFINUniversity of California, Los Alamos (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) Scientific Laboratory Los Alamos, New Mexicoexpanded and improved edition1959ACADEMIC PRESSA Subsidiary of Harcourt Brace Jovanovlch. Publishers New(Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959)
York London Toronto Sydney San FranciscoCopyright 1959 .BY Academic Press, Inc.ALL RIGHTS RESERVEDNO PART OF THIS BOOK MAY BE REPRODUCED IN ANY FORM, This is Volume 5 inPURE AND APPLIED PHYSICSA Series of Monographs and TextbooksConsulting Editors: H. s. w. Massey and Keith a. BruecknerA complete li (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) w York. New York 10003United Kingdom Edition published by ACADEMIC PRESS, INC. (LONDON) LTD. 24/28 Ova) Road. London NW1Library of Congress Catalog Card Number: 59-10741PRINTED in the UNITED STATES OF AMERICA 829Author’s PrefaceThe purpose of this book is to describe the application of group theoret (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) ical methods to problems of quantum mechanics with specific reference to atomic spectra. The actual solution of quantum mechanical equations is, in ge(Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959)
neral, so difficult that one obtains by direct calculations only crude approximations to the real solutions. It is gratifying, therefore, that a largeThis is Volume 5 inPURE AND APPLIED PHYSICSA Series of Monographs and TextbooksConsulting Editors: H. s. w. Massey and Keith a. BruecknerA complete li (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) in 1931, there was a great reluctance among physicists toward accepting group theoretical arguments and the group theoretical point of view. It pleases the author that this reluctance has virtually vanished in the meantime and that, in fact, the younger generation does not understand the causes and (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) the basis for this reluctance. Of the older generation it was probably M, von Laue who first recognized the significance of group theory as the natura(Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959)
l tool with which to obtain a first orientation in problems of quantum mechanics. Von Laue’s encouragement of both publisher and author contributed siThis is Volume 5 inPURE AND APPLIED PHYSICSA Series of Monographs and TextbooksConsulting Editors: H. s. w. Massey and Keith a. BruecknerA complete li (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) portant. My answer was that the explanation of Laporte’s rule (the concept of parity) and the quantum theory of the vector addition model appeared to me most significant. Since that time, I have come to agree with his answer that the recognition that almost all rules of spectroscopy follow from the (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) symmetry of the problem is the most remarkable result.Three new’ chapters have been added in translation. The second half of Chapter 24 reports on the(Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959)
work of Racah and of his followers. Chapter 24 of the German edition now appears as Chapter 25. Chapter 26 deals with time inversion, a symmetry operThis is Volume 5 inPURE AND APPLIED PHYSICSA Series of Monographs and TextbooksConsulting Editors: H. s. w. Massey and Keith a. BruecknerA complete li (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) f Chapter 27, have not appeared before in print. While Chapter 27 appears at the end of the book for editorial reasons, the reader may be well advised to glance at it when studying, in Chapters 17 and 24, the relevant concepts. The other chapters represent the translation of Dr. J. J. Griffin, to wh (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) om the author is greatly indebted for his ready acceptance of several suggestions and his generally cooperative attitude. He also converted the left-h(Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959)
anded coordinate system originally used to a right-handed system and added an Appendix on notations.VviAUTHOR’S PREFACEThe character of the book—its eThis is Volume 5 inPURE AND APPLIED PHYSICSA Series of Monographs and TextbooksConsulting Editors: H. s. w. Massey and Keith a. BruecknerA complete li (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) tained in articles first published in the Zeitschrifi fiir Physik in 1926 and early 1927. The initial stimulus for these articles was given by the investigations of Heisenberg and Dirac on the quantum theory of assemblies of identical particles. Weyl delivered lectures in Zurich on related subjects (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) during the academic year 1927-1928. These were later expanded into his well-known book.When it became known that the German edition was being translat(Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959)
ed, many additions were suggested. It is regrettable that most of these could not be followed without substantially changing the outlook and also the This is Volume 5 inPURE AND APPLIED PHYSICSA Series of Monographs and TextbooksConsulting Editors: H. s. w. Massey and Keith a. BruecknerA complete li (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) his colleagues for many stimulating discussions on the role of group theory in quantum mechanics as well as on more specific subjects. He wishes to record his deep indebtedness to Drs. Bargmann, Michel, Wightman, and, last but not least, J. von Neumann.E. p. Wigner Princeton, New Jersey (Pure and applied physics 5) EUGENE p WIGNER (eds ) group theory and its application to the quantum mechanics of atomic spectra academic press (1959) This is Volume 5 inPURE AND APPLIED PHYSICSA Series of Monographs and TextbooksConsulting Editors: H. s. w. Massey and Keith a. BruecknerA complete liGọi ngay
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