Superselection Sectors, Pure States, Bose and Fermi Distributions by Completely Positive Quantum-Motions

Author:

Dietz Klaus12

Affiliation:

1. Sektion Physik, LMU, Muenchen, Theresienstrasse 37, 80333 Muenchen, Germany

2. Physics Department, University of Bonn, 53115 Bonn, Germany

Abstract

The connection of the operators V, building up the Kossakowski-Lindblad generator, with the asymptotic states of the corresponding completely positive quantum-maps is discussed. Maps leading to decoherence are constructed, the importance of zero-modes in the absolute value [Formula: see text] of V for the generation of pure states from arbitrary mixed states is illustrated. The universal rôle of equipartite states appears when unitary V are chosen. The 'damped oscillator model' is generalized to yield Bose and Fermi distributions as asymptotic states for systems described by a Hamiltonian and other constants of motion. Calculations are performed in finite dimensional Hilbert spaces.

Publisher

World Scientific Pub Co Pte Lt

Subject

Mathematical Physics,Statistics and Probability,Statistical and Nonlinear Physics

Reference5 articles.

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Analysis of quantum semigroups with GKS–Lindblad generators: I. Simple generators;Journal of Physics A: Mathematical and Theoretical;2008-01-29

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