Decoherent Dynamics of a Two-Level System Coupled to a Sea of Spins


The dynamics of a two-level system which is coupled to an environmental sea of infinitely many spin-1y2 particles is investigated by use of the resolvent operator approach. Only at zero temperature does this spin-spin-bath model exhibit identical behavior as the more familiar spin-boson model. It is found that increasing temperature favors coherent dynamics… (More)


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