We point out that a unified theoretical framework for the explanation of quite different decoherence experiments can be outlined, provided the interaction causing decoherence can be described in terms of scattering events corresponding to random momentum transfers between system and environment. This unified description relies on a direct correspondence between the different possible master-equations describing such decoherence dynamics and the classical Lévy-Khintchine formula. The loss of coherence due to interaction with the environment is then described in terms of the characteristic function of the related Lévy process, accounting for a wide range of different possible behaviors.

Decoherence due to scattering events and Lévy processes / B. Vacchini. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 67:1(2007), pp. 012040.012040.1-012040.012040.6. ((Intervento presentato al 3. convegno Quantum mechanics between decoherence and determinism : new aspects from particle physics to cosmology tenutosi a Piombino nel 2006.

Decoherence due to scattering events and Lévy processes

B. Vacchini
Primo
2007

Abstract

We point out that a unified theoretical framework for the explanation of quite different decoherence experiments can be outlined, provided the interaction causing decoherence can be described in terms of scattering events corresponding to random momentum transfers between system and environment. This unified description relies on a direct correspondence between the different possible master-equations describing such decoherence dynamics and the classical Lévy-Khintchine formula. The loss of coherence due to interaction with the environment is then described in terms of the characteristic function of the related Lévy process, accounting for a wide range of different possible behaviors.
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/38525
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