文档介绍：Lecture Notes in Physics
Editorial Board
R. Beig, Wien, Austria
B.-G. Englert, College Station, TX, USA
U. Frisch, Nice, France
P. Hanggi,¨ Augsburg, Germany
K. Hepp, Zurich,¨ Switzerland
W. Hillebrandt, Garching, Germany
D. Imboden, Zurich,¨ Switzerland
R. L. Jaffe, Cambridge, MA, USA
R. Kippenhahn, Gottingen,¨ Germany
R. Lipowsky, Golm, Germany
H. v. Lohneysen,¨ Karlsruhe, Germany
I. Ojima, Kyoto, Japan
D. te, Nice, France, and
Los Angeles, CA, USA
H. A. Weidenmuller,¨ Heidelberg, Germany
W. Weise, Villazzano/Trento, Italy, and
Garching, Germany
J. Wess, Munchen,¨ Germany
J. Zittartz, Koln,¨ Germany
3
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Milan
Paris
Tokyo
Preface
puters do not exist as of yet, it may take more than a decade
until usable e to realisation; some people are even doubtful as to
whether a large-scale puter is a possibility in principle. However,
the basic ideas formulated just a bit more than 10 years ago had a tremendous
impact upon research in the special field in particular, and they have initiated
substantial progress towards deeper understanding of quantum mechanics in gen-
eral. Modern experimental techniques have provided convincing evidence about
various aspects of “quantum weirdness” in that, for instance, entanglement or
teleportation are established as physical realities. Also, the mysterious collapse of
the wave function is now replaced by a thorough understanding of the dynamical
process which is decoherence.
It is in the spirit and tradition of the South African Chris Engelbrecht Sum-
mer School in Theoretical Physics that the topical subject implied in the title
of the present issue was chosen as the theme of the School in 2001. This volume
presents pertinent contributions of some of the leading researchers at the front
of this highly topical field. prises material that is well balanced between
theoretical aspects and experimental realisation. The broad spreading of contri-
butions i