## Decoherence and the Appearance of a Classical World in Quantum TheoryErich Joos, H. Dieter Zeh, Claus Kiefer, Domenico J. W. Giulini, Joachim Kupsch, Ion-Olimpiu Stamatescu Springer Science & Business Media, 9 ÁÕ.¤. 2013 - 496 Ë¹éÒ 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 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 more 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. |

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In classical mechanics, a symmetric Hamiltonian means that each asymmetric solution (such as an elliptical Kepler orbit) implies other solutions, obtained by applying the symmetry transformations (e.g. rotations).

In classical mechanics, a symmetric Hamiltonian means that each asymmetric solution (such as an elliptical Kepler orbit) implies other solutions, obtained by applying the symmetry transformations (e.g. rotations).

**Quantum theory**... Ë¹éÒ 12

The theory of supersymmetry (Wess and Zumino 1971) postulates superpositions of bosons and fermions. ... However, where is the border line that distinguishes an n-particle state of

The theory of supersymmetry (Wess and Zumino 1971) postulates superpositions of bosons and fermions. ... However, where is the border line that distinguishes an n-particle state of

**quantum mechanics**from an N-particle state that is ... Ë¹éÒ 13

All properties of macroscopic bodies which can be calculated quantitatively are consistent with

All properties of macroscopic bodies which can be calculated quantitatively are consistent with

**quantum mechanics**, but not with any microscopic classical description. As will be demonstrated throughout the book, the theory of ... Ë¹éÒ 16

Superselection rules thus arise as a straightforward consequence of

Superselection rules thus arise as a straightforward consequence of

**quantum theory**under realistic assumptions. They have nonetheless been discussed mainly in mathematical physics – apparently under the influence of von Neumann's and ... Ë¹éÒ 19

Physical states are assumed to vary in time in accordance with a dynamical law – in

Physical states are assumed to vary in time in accordance with a dynamical law – in

**quantum mechanics**of the form ið, a) = H|a). In contrast, a measurement device is usually defined regardless of time. This must then also hold for the ...### ¤ÇÒÁ¤Ô´àËç¹¨Ò¡¼ÙéÍ×è¹ - à¢ÕÂ¹º·ÇÔ¨ÒÃ³ì

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Decoherence Through Interaction with the Environment | 41 |

Decoherence in Quantum Field Theory | 181 |

Consistent Histories and Decoherence | 227 |

Superselection Rules and Symmetries | 259 |

Open Quantum Systems | 316 |

Stochastic Collapse Models | 357 |

Related Concepts and Methods | 383 |

A1 Equation of Motion of a Mass Point | 394 |

Green Functions | 402 |

A4 Quantum Correlations | 415 |

A6 Galilean Symmetry | 425 |

A7 Stochastic Processes | 432 |

Stochastic Differential Equations | 439 |

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