Superselection Sectors, Pure States, Bose and Fermi Distributions by Completely Positive Quantum-Motions
2005 ◽
Vol 12
(01)
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pp. 23-35
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Keyword(s):
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.
2019 ◽
Vol 26
(03)
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pp. 1950012
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Keyword(s):
Keyword(s):
2020 ◽
Vol 20
(13&14)
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pp. 1081-1108
Keyword(s):
Keyword(s):
2012 ◽
Vol 29
(6)
◽
pp. 060503
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