Time Evolution of tunneling and decoherence: soluble model
A. N. Salgueiro, A. F. de R. de Toledo Piza, J. G. Peixoto de Faria
Abstract
Decoherence effects associated to the damping of a tunneling two-level system are shown to dominate the tunneling probability at short times in strong coupling regimes in the context of a soluble model. A general decomposition of tunneling rates in dissipative and unitary parts is implemented. Master equation treatments fail to describe the model system correctly when more than a single relaxation time is involved.
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