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Dephasing and Renormalization in Quantum Two-Level Systems
[chapter]
2003
Quantum Noise in Mesoscopic Physics
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Motivated by fundamental questions about the loss of phase coherence at low temperature we consider relaxation, dephasing and renormalization effects in quantum two-level systems which are coupled to a dissipative environment. We observe that experimental conditions, e.g., details of the initial state preparation, determine to which extent the environment leads to dephasing or to renormalization effects. We analyze an exactly solvable limit where the relation between both can be demonstrated
doi:10.1007/978-94-010-0089-5_17
fatcat:mvj4zk6xzfehfizbvozeiqjgvy