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2014 | 12 | 3 | 168-174
Tytuł artykułu

Classical analogue of the statistical operator

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
We advance the notion of a classical density matrix, as a classical analogue of the quantum mechanical statistical operator, and investigate its main properties. In the case of composite systems a partial trace-like operation performed upon the global classical density matrix leads to a marginal density matrix describing a subsystem. In the case of dynamically independent subsystems (that is, non-interacting subsystems) this marginal density matrix evolves locally, its behavior being completely determined by the local phase-space flow associated with the subsystem under consideration. However, and in contrast with the case of ordinary marginal probability densities, the marginal classical density matrix contains information concerning the statistical correlations between a subsystem and the rest of the system.
Wydawca
Czasopismo
Rocznik
Tom
12
Numer
3
Strony
168-174
Opis fizyczny
Daty
wydano
2014-03-01
online
2014-03-13
Twórcy
  • Physics Department, University of Pretoria, Pretoria, 0002, South Africa , cz@up.ac.za
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-014-0438-y
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