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Abstract:

We extend the master-equation treatment of dynamical evolution of a system-plus-reservoir configuration including the propagation of initial correlations as a noise source. Specializing into the quantum harmonic oscillator coupled to a fermionic heat bath, we develop a model for the diffusion matrix in the space of diagonal density operators. It can be shown that mean values of observables undergo Langevin-like motion and, in particular, that the mean value and dispersion of the oscillator quanta approach the canonical equilibrium values. A final interpretation of the characteristics and role of the noise source is given. © 1993 The American Physical Society.

Registro:

Documento: Artículo
Título:Master Langevin equations: Origin of asymptotic diffusion
Autor:Dorso, C.O.; Hernndez, E.S.; Vega, J.L.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Año:1993
Volumen:47
Número:1
Página de inicio:300
Página de fin:304
DOI: http://dx.doi.org/10.1103/PhysRevE.47.300
Handle:http://hdl.handle.net/20.500.12110/paper_1063651X_v47_n1_p300_Dorso
Título revista:Physical Review E
ISSN:1063651X
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_1063651X_v47_n1_p300_Dorso.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1063651X_v47_n1_p300_Dorso

Referencias:

  • F. Haake, in Statistical Treatment of Open Systems by Generalized Master Equations, Springer Tracts in Modern Physics Vol. 66 (Springer, Berlin, 1973); W. Zwanzig, in Lectures in Theoretical Physics, edited by W. S. Brittin, B. W. Downs, and J. Downs (Wiley, New York, 1961); Balescu, R., (1975) Equilibrium and Nonequilibrium Statistical Mechanics, , Wiley, New York
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Citas:

---------- APA ----------
Dorso, C.O., Hernndez, E.S. & Vega, J.L. (1993) . Master Langevin equations: Origin of asymptotic diffusion. Physical Review E, 47(1), 300-304.
http://dx.doi.org/10.1103/PhysRevE.47.300
---------- CHICAGO ----------
Dorso, C.O., Hernndez, E.S., Vega, J.L. "Master Langevin equations: Origin of asymptotic diffusion" . Physical Review E 47, no. 1 (1993) : 300-304.
http://dx.doi.org/10.1103/PhysRevE.47.300
---------- MLA ----------
Dorso, C.O., Hernndez, E.S., Vega, J.L. "Master Langevin equations: Origin of asymptotic diffusion" . Physical Review E, vol. 47, no. 1, 1993, pp. 300-304.
http://dx.doi.org/10.1103/PhysRevE.47.300
---------- VANCOUVER ----------
Dorso, C.O., Hernndez, E.S., Vega, J.L. Master Langevin equations: Origin of asymptotic diffusion. 1993;47(1):300-304.
http://dx.doi.org/10.1103/PhysRevE.47.300