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Quantum equations of motion and the Liouville equation

Journal Article · · Found. Phys.; (United States)
DOI:https://doi.org/10.1007/BF00938008· OSTI ID:5836241
Equations of motion for explicitly time-dependent operators in the Heisenberg and Schroedinger pictures, respectively, are reviewed. A simple transformation reduces the related equation in the Heisenberg picture to closed form. An algorithm is introduced for the classical limit which, in either picture, returns the classical equation of motion for dynamical functions. Applications of this algorithm to the equation of motion for the density matrix reduces it to the classical Liouville equation. A property related to this algorithm is established for the commutator of any two analytic functions of finite polynomials of conjugate variables.
Research Organization:
Tel-Aviv Univ., Israel
OSTI ID:
5836241
Journal Information:
Found. Phys.; (United States), Journal Name: Found. Phys.; (United States) Vol. 17:10; ISSN FNDPA
Country of Publication:
United States
Language:
English