6533b839fe1ef96bd12a5ae1
RESEARCH PRODUCT
Initial correlations effects on decoherence at zero temperature
Giuseppe CompagnoFrancesco PetruccioneBruno Bellomosubject
PhysicsQuantum PhysicsQuantum decoherenceFOS: Physical sciencesGeneral Physics and AstronomyStatistical and Nonlinear PhysicsDiscrete dipole approximationharmonic oscillators.Charged particlesymbols.namesakeWavelengthWave–particle dualityQuantum mechanicsoscillatorsymbolsZero temperatureQuantum Physics (quant-ph)Hamiltonian (quantum mechanics)bathMathematical Physicsdescription
We consider a free charged particle interacting with an electromagnetic bath at zero temperature. The dipole approximation is used to treat the bath wavelengths larger than the width of the particle wave packet. The effect of these wavelengths is described then by a linear Hamiltonian whose form is analogous to phenomenological Hamiltonians previously adopted to describe the free particle-bath interaction. We study how the time dependence of decoherence evolution is related with initial particle-bath correlations. We show that decoherence is related to the time dependent dressing of the particle. Moreover because decoherence induced by the T=0 bath is very rapid, we make some considerations on the conditions under which interference may be experimentally observed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-09-25 |