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Number of results

Journal

2014 | 12 | 3 | 168-174

Article title

Classical analogue of the statistical operator

Content

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Languages of publication

EN

Abstracts

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.

Publisher

Journal

Year

Volume

12

Issue

3

Pages

168-174

Physical description

Dates

published
1 - 3 - 2014
online
13 - 3 - 2014

Contributors

  • Universidad Nacional de La Plata UNLP-CONICET, C.C. 727, 1900, La Plata, Argentina
  • Physics Department, University of Pretoria, Pretoria, 0002, South Africa

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11534-014-0438-y
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