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Abstract:

A non-Markovian treatment of the relaxation of a spin j is developed. The corresponding reduced collision operator admits a discrete spectral representation whose eginevalues are extracted in a high temperature limit. Then, assuming a phonon reservoir with a Debye-like density of phonon states, the time evolution of the collision operator is explicitly given, showing that the corresponding time decay arises from the branch points of its Laplace transform. The extraction of the analytic continuation of the transform allows the memory effects on the relaxation frequencies (resolvent poles) to be analyzed and the validity of the rotating-wave approximation to be tested. © 1990.

Registro:

Documento: Artículo
Título:Non-Markovian relaxation of a quantum system
Autor:Cataldo, H.M.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Año:1990
Volumen:165
Número:2
Página de inicio:249
Página de fin:269
DOI: http://dx.doi.org/10.1016/0378-4371(90)90194-W
Título revista:Physica A: Statistical Mechanics and its Applications
Título revista abreviado:Phys A Stat Mech Appl
ISSN:03784371
CODEN:PHYAD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03784371_v165_n2_p249_Cataldo

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Citas:

---------- APA ----------
(1990) . Non-Markovian relaxation of a quantum system. Physica A: Statistical Mechanics and its Applications, 165(2), 249-269.
http://dx.doi.org/10.1016/0378-4371(90)90194-W
---------- CHICAGO ----------
Cataldo, H.M. "Non-Markovian relaxation of a quantum system" . Physica A: Statistical Mechanics and its Applications 165, no. 2 (1990) : 249-269.
http://dx.doi.org/10.1016/0378-4371(90)90194-W
---------- MLA ----------
Cataldo, H.M. "Non-Markovian relaxation of a quantum system" . Physica A: Statistical Mechanics and its Applications, vol. 165, no. 2, 1990, pp. 249-269.
http://dx.doi.org/10.1016/0378-4371(90)90194-W
---------- VANCOUVER ----------
Cataldo, H.M. Non-Markovian relaxation of a quantum system. Phys A Stat Mech Appl. 1990;165(2):249-269.
http://dx.doi.org/10.1016/0378-4371(90)90194-W