CONICET | Buscador de Institutos y Recursos Humanos

There are many formalisms to describe quantum decoherence. However, many of them give a non-general and ad hoc definition of ´pointer basis´ or ´moving preferred basis´ , and this fact is a problem for the decoherence program. In this paper, we will consider quantum systems under a general theoretical framework for decoherence and we will present a tentative definition of the moving preferred basis. These ideas are implemented in a well-known open system model. The obtained decoherence and the relaxation times are defined and compared with those of the literature for the LeeFriedrichs model.