Artículo
Decoherence in composite quantum open systems: The effectiveness of unstable degrees of freedom
Fecha de publicación:
12/2006
Editorial:
World Scientific
Revista:
International Journal of Modern Physics B
ISSN:
0217-9792
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The effect induced by an environment on a composite quantum system is studied. The model considers the composite system as comprised by a subsystem A coupled to a subsystem B which is also coupled to an external environment. We studied all possible four combinations of subsystems A and B made up with a harmonic oscillator and an upside down oscillator. We analyzed the decoherence suffered by subsystem A due to an effective environment composed by subsystem B and the external reservoir. In all the cases we found that subsystem A decoheres even though it interacts with the environment only through its sole coupling to B. However, the effectiveness of the diffusion depends on the unstable nature of subsystem A and B. Therefore, the role of this degree of freedom in the effective environment is analyzed in detail. © World Scientific Publishing Company.
Palabras clave:
Chaotic Environments
,
Decoherence
,
Open Systems
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Identificadores
Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Lombardo, Fernando Cesar; Villar, Paula Ines; Decoherence in composite quantum open systems: The effectiveness of unstable degrees of freedom; World Scientific; International Journal of Modern Physics B; 20; 20; 12-2006; 2951-2976
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