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The development of a consistent picture of the processes of
decoherence and quantum measurement is among the most interesting
fundamental problems with far-reaching consequences for our
understanding of the physical world. A satisfactory solution of
this problem requires a treatment which is c-
patiblewiththetheoryofrelativity, andmanydiverseapproachestosolveor
circumvent the arising di?culties have been suggested. This volume
collects the contributions of a workshop on Relativistic Quantum
Measurement and Decoherence held at the Istituto Italiano per gli
Studi Filoso?ci in Naples, April9-10,1999.
Theworkshopwasintendedtocontinueapreviousmeeting entitled Open
Systems and Measurement in Relativistic Quantum Theory, the talks
of which are also published in the Lecture Notes in Physics Series
(Vol. 526). The di?erent attitudes and concepts used to approach
the decoherence and quantum measurement problem led to lively
discussions during the wo- shop and are re?ected in the diversity
of the contributions. In the ?rst article the measurement problem
is introduced and the various levels of compatibility with special
relativity are critically reviewed. In other contributions the r
oles of non-locality and entanglement in quantum measurement and
state vector preparation are discussed from a pragmatic
quantum-optical and quant- information perspective. In a further
article the viewpoint of the consistent histories approach is
presented and a new criterion is proposed which re?nes
thenotionofconsistency. Also, thephenomenonofdecoherenceisexamined
from an open system's point of view and on the basis of
superselection rules employing group theoretic and algebraic
methods. The notions of hard and
softsuperselectionrulesareaddressed,
aswellasthedistinctionbetweenreal
andapparentlossofquantumcoherence."
This book treats modern aspects of open systems, measurement, and
decoherence in relativistic quantum theory. It starts with a
comprehensive introduction to the problems related to measuring
local and nonlocal observables and the constraints imposed by the
causality principle. In the articles that follow, the emphasis lies
on new theoretical models. Quantum dynamical semigroups and
stochastic processes in Hilbert space are introduced, as are
dynamical reduction models. Further topics include relativistic
generalizations of the continuous spontaneous localization model
and of the quantum state diffusion model and decoherence and the
dynamical selection of preferred basis sets in the framework of
continuous measurement theory and of the decoherent histories
approach. Mathematical aspects of quantum measurement theory and
dynamical entropies are also studied from the viewpoint of the
operational approach to quantum mechanics.
This book treats modern aspects of open systems, measurement, and decoherence in relativistic quantum theory. It starts with a comprehensive introduction to the problems related to measuring local and nonlocal observables and the constraints imposed by the causality principle. In the articles that follow, the emphasis lies on new theoretical models. Quantum dynamical semigroups and stochastic processes in Hilbert space are introduced, as are dynamical reduction models. Further topics include relativistic generalizations of the continuous spontaneous localization model and of the quantum state diffusion model and decoherence and the dynamical selection of preferred basis sets in the framework of continuous measurement theory and of the decoherent histories approach. Mathematical aspects of quantum measurement theory and dynamical entropies are also studied from the viewpoint of the operational approach to quantum mechanics.
Quantum mechanics has shown unprecedented success as a physical
theory, but it has forced a new view on the description of physical
reality. In recent years, important progress has been achieved both
in the theory of open quantum systems and in the experimental
realization and control of such systems. A great deal of the new
results is concerned with the characterization and quantification
of quantum memory effects. From this perspective, the 684.
WE-Heraeus-Seminar has brought together scientists from different
communities, both theoretical and experimental, sharing expertise
on open quantum systems, as well as the commitment to the
understanding of quantum mechanics. This book consists of many
contributions addressing the diversified physics community
interested in foundations of quantum mechanics and its applications
and it reports about recent results in open quantum systems and
their connection with the most advanced experiments testing quantum
mechanics.
Quantum mechanics has shown unprecedented success as a physical
theory, but it has forced a new view on the description of physical
reality. In recent years, important progress has been achieved both
in the theory of open quantum systems and in the experimental
realization and control of such systems. A great deal of the new
results is concerned with the characterization and quantification
of quantum memory effects. From this perspective, the 684.
WE-Heraeus-Seminar has brought together scientists from different
communities, both theoretical and experimental, sharing expertise
on open quantum systems, as well as the commitment to the
understanding of quantum mechanics. This book consists of many
contributions addressing the diversified physics community
interested in foundations of quantum mechanics and its applications
and it reports about recent results in open quantum systems and
their connection with the most advanced experiments testing quantum
mechanics.
The physics of open quantum systems plays a major role in modern experiments and theoretical developments of quantum mechanics. Written for graduate students and readers with research interests in open systems, this book provides an introduction into the main ideas and concepts, in addition to developing analytical methods and computer simulation techniques.
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