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Abstract:

The evolution of a spinlike variable in a double potential well that depends upon both angular coordinates is investigated as the system is subjected to both deterministic damping and stochastic noise linked by the fluctuation-dissipation relationship. A variational procedure appropriate for large barrier-to-noise ratio is adopted, and it can be seen that the resulting Euler-Lagrange equation introduces an angle-dependent field conjugate to the leading Fokker-Planck eigenfunction. In this way the spectral problem of the Fokker-Planck operator is approximated by two coupled first-order partial-differential equations, whose solutions allow the determination of the relaxing probability distribution and the equilibration current in almost all phase-space regions. A detailed application to the Lipkin model of many-body theory is presented. © 1991 The American Physical Society.

Registro:

Documento: Artículo
Título:Transitions between metastable states in a solid double well
Autor:Hernandez, E.S.
Filiación:Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Año:1991
Volumen:44
Número:6
Página de inicio:3559
Página de fin:3569
DOI: http://dx.doi.org/10.1103/PhysRevA.44.3559
Título revista:Physical Review A
ISSN:10502947
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v44_n6_p3559_Hernandez

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Citas:

---------- APA ----------
(1991) . Transitions between metastable states in a solid double well. Physical Review A, 44(6), 3559-3569.
http://dx.doi.org/10.1103/PhysRevA.44.3559
---------- CHICAGO ----------
Hernandez, E.S. "Transitions between metastable states in a solid double well" . Physical Review A 44, no. 6 (1991) : 3559-3569.
http://dx.doi.org/10.1103/PhysRevA.44.3559
---------- MLA ----------
Hernandez, E.S. "Transitions between metastable states in a solid double well" . Physical Review A, vol. 44, no. 6, 1991, pp. 3559-3569.
http://dx.doi.org/10.1103/PhysRevA.44.3559
---------- VANCOUVER ----------
Hernandez, E.S. Transitions between metastable states in a solid double well. 1991;44(6):3559-3569.
http://dx.doi.org/10.1103/PhysRevA.44.3559