Titlebook: Quantum Future; From Volta and Como Philippe Blanchard,Arkadiusz Jadczyk Conference proceedings 1999 Springer-Verlag Berlin Heidelberg 199

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Conference proceedings 1999m theory and the philosophy of science. The 14 contributions capture a wide variety of viewpoints and backgrounds. Some chapters deal primarily with the main experimental issues; others focus on theoretical and philosophical questions. In addition, attempts are made to systematically analyze ways in

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Continuous fuzzy measurements and visualization of a quantum transition,nt selective description is given by the restricted path integrals (RPI) or equivalently by complex Hamiltonians. The consideration of a two-level system in the framework of this approach predicts that the continuous measurement of energy in such a system may visualize a quantum transition between t

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Quantum jumps revisited: An overview of quantum trajectory theory,ation in quantum mechanics are emphasized: (1) there exist different unravellings of a scattering process which reveal complementary aspects of the dynamics in the interaction region, and (2) through the making of records via a stochastic implementation of a formalized quantum jump a self-consistent

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Problems in objectizing,n two different possible meanings of the word “Reality” and, more precisely, to call “Empirical Reality” the set of the phenomena and “Mind-Independent Reality” what is (at least by some) supposed to exist quite independently of human representations. This, in turn, leads to distinguishing between S

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,Observing the decoherence of the meter in a measurement: a variation on schr?dinger’s cat experimen We have observed the process by which, in a quantum measurement, a coherent superposition of meter states is very rapidly replaced by a statistical mixture in a preferred basis. The rate of this process was found to be proportional to the mean number of quanta contained in the meter. The experiment

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Decoherence: Concepts and examples,ironment. After discussing the general concepts, we present the following examples: Localisation of objects, quantum Zeno effect, classicality of fields and charges in QED, and decoherence in gravity theory. We finally emphasise the important interpretational features of decoherence.

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Metrical quantization,path integral constructs, each of which generally succeeds only in Cartesian coordinates. All quantization schemes that lead to Hilbert space vectors and Weyl operators—even those that eschew Cartesian coordinates—implicitly contain a metric on a flat phase space. This feature is demonstrated by stu