6533b82efe1ef96bd129277e
RESEARCH PRODUCT
Wave Packet Decoherence in Momentum Space
Francesco PetruccioneGiuseppe CompagnoBruno Bellomosubject
PhysicsQuantum decoherencePhotonTotal angular momentum quantum numberWave packetQuantum electrodynamicsQuantum mechanicsMomentum transferPosition and momentum spaceQuantum dissipationWave function collapseaaadescription
We consider the development of decoherence between the momentum components of a wave packet of a non relativistic charged particle interacting linearly with the electromagnetic field in equilibrium at temperature T. By adopting from the beginning the electric dipole approximation the Hamiltonian assumes a form analogous to the one used in the context of quantum computing for an ensemble of two level systems. We obtain the characteristic vacuum and thermal decoherence times and we show that decoherence between different momenta is due to the onset of a correlation between each momentum component and the associated transverse photons that are also responsible of mass renormalization.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-01-01 | AIP Conference Proceedings |