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Abstract:

A model of quantal Brownian motion in fermionic reservoirs is applied to study the time evolution of a giant isovector dipole mode in Pb208. The coupled equations of irreversible motion for the excited collective mode and for the nucleon intrinsic degrees of freedom are simultaneously solved and their energies, entropies, and relative populations are observed over a lengthy time interval. The resonant decay can be seen together with the excitation of the Fermi sea towards a non-Fermi asymptotic distribution. It is found that the effective decay rate is smaller than the downwards transition rate, in contrast to the widespread assumption in microscopic models of resonance damping. Diffusion, as well as dissipation, appears as a feature of mutual equilibration. © 1984 The American Physical Society.

Registro:

Documento: Artículo
Título:Dissipative dynamics of interacting quantal degrees of freedom in spherical nuclei
Autor:Hernández, E.S.; Dorso, C.O.
Filiación:Consejo Nacional de Investigaciones Científicas Y Tecnicas, Buenos Aires, Argentina
Departamento de Física, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Año:1984
Volumen:30
Número:5
Página de inicio:1711
Página de fin:1718
DOI: http://dx.doi.org/10.1103/PhysRevC.30.1711
Título revista:Physical Review C
ISSN:05562813
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562813_v30_n5_p1711_Hernandez

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Citas:

---------- APA ----------
Hernández, E.S. & Dorso, C.O. (1984) . Dissipative dynamics of interacting quantal degrees of freedom in spherical nuclei. Physical Review C, 30(5), 1711-1718.
http://dx.doi.org/10.1103/PhysRevC.30.1711
---------- CHICAGO ----------
Hernández, E.S., Dorso, C.O. "Dissipative dynamics of interacting quantal degrees of freedom in spherical nuclei" . Physical Review C 30, no. 5 (1984) : 1711-1718.
http://dx.doi.org/10.1103/PhysRevC.30.1711
---------- MLA ----------
Hernández, E.S., Dorso, C.O. "Dissipative dynamics of interacting quantal degrees of freedom in spherical nuclei" . Physical Review C, vol. 30, no. 5, 1984, pp. 1711-1718.
http://dx.doi.org/10.1103/PhysRevC.30.1711
---------- VANCOUVER ----------
Hernández, E.S., Dorso, C.O. Dissipative dynamics of interacting quantal degrees of freedom in spherical nuclei. 1984;30(5):1711-1718.
http://dx.doi.org/10.1103/PhysRevC.30.1711