Decoherence and the Appearance of a Classical World in Quantum Theory When we were preparing the first edition of this book the concept of de coherence was known only to a minority of physicists In the meantime a wealth of contributions has appeared in the literature

When we were preparing the first edition of this book, the concept of de coherence was known only to a minority of physicists In the meantime, a wealth of contributions has appeared in the literature important ones as well as serious misunderstandings The phenomenon itself is now experimen tally clearly established and theoretically well understood in principle New fiWhen we were preparing the first edition of this book, the concept of de coherence was known only to a minority of physicists In the meantime, a wealth of contributions has appeared in the literature important ones as well as serious misunderstandings The phenomenon itself is now experimen tally clearly established and theoretically well understood in principle New fields of application, discussed in the revised book, are chaos theory, informa tion theory, quantum computers, neuroscience, primordial cosmology, some aspects of black holes and strings, and others While the first edition arose from regular discussions between the authors, thus leading to a clear entanglement of their otherwise quite different chap ters, the latter have thereafter evolved or less independently While this may broaden the book s scope as far as applications and methods are con cerned, it may also appear confusing to the reader wherever basic assumptions and intentions differ as they do For this reason we have rearranged the or der of the authors they now appear in the same order as the chapters, such that those most closely related to the early and most ambitious concept of decoherence are listed first The first three authors Joos, Zeh, Kiefer agree with one another that decoherence in contradistinction to the Copen hagen interpretation allows one to eliminate primary classical concepts, thus neither relying on an axiomatic concept of observables nor on a probability interpretation of the wave function in terms of classical concepts.

Decoherence and the Appearance of a Classical World in Quantum Theory is a cooperative book by a number of prominent quantum theorists, including H.Dieter Zeh, the author of the original paper proposing the theory of "decoherence." This essay (which I am dying to read) is contained in a book edited by Wheeler and Zurek (1983) which has become rare (as a hen's tooth or as a real thing in quantum mechanics.) The subject of the current book is the elaboration of this theory, which is becoming a dom [...]