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- W2054832512 abstract "We prove a quantum version of the second law of thermodynamics: the (quantum) Boltzmann entropy increases if the initial (zero time) density matrix decoheres, a condition generally satisfied in Nature. It is illustrated by a model of wave-packet reduction, the Coleman–Hepp model, along the framework introduced by Sewell (2005) in his approach to the quantum measurement problem. Further models illustrate the monotonic-versus-non-monotonic behavior of the quantum Boltzmann entropy in time. As a last closely related topic, decoherence, which was shown by Narnhofer and Thirring (1999) to enforce macroscopic purity in the case of quantum K systems, is analyzed within a different class of quantum chaotic systems, viz. the quantum Anosov models as defined by Emch, Narnhofer, Sewell and Thirring (1994). A review of the concept of quantum Boltzmann entropy, as well as of some of the rigorous approaches to the quantum measurement problem within the framework of Schrödinger dynamics, is given, together with an overview of the C* algebra approach, which encompasses the relevant notions and definitions in a comprehensive way." @default.
- W2054832512 created "2016-06-24" @default.
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- W2054832512 date "2014-08-01" @default.
- W2054832512 modified "2023-09-25" @default.
- W2054832512 title "On reduction of the wave-packet, decoherence, irreversibility and the second law of thermodynamics" @default.
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- W2054832512 doi "https://doi.org/10.1016/j.physrep.2014.03.001" @default.
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