Decoherence under many-body system-environment interactions: a stroboscopic representation based on a fictitiously homogenized interaction rate

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dc.creatorAlvarez, Gonzalo A.
dc.creatorDanieli, Ernesto P.
dc.creatorLevstein, Patricia R.
dc.creatorPastawski, Horacio M.
dc.date2007-01-23
dc.date2007-07-12
dc.date.accessioned2026-07-07T08:15:13Z
dc.date.available2026-07-07T08:15:13Z
dc.descriptionAn environment interacting with portions of a system leads to multiexponential interaction rates. Within the Keldysh formalism, we fictitiously homogenize the system-environment interaction yielding a uniform decay rate facilitating the evaluation of the propagators. Through an injection procedure we neutralize the fictitious interactions. This technique justifies a stroboscopic representation of the system-environment interaction which is useful for numerical implementation and converges to the natural continuous process. We apply this procedure to a fermionic two-level system and use the Jordan-Wigner transformation to solve a two-spin swapping gate in the presence of a spin environment.
dc.description11 pages, 3 figures, title changed, some typos changed
dc.identifierhttps://arxiv.org/abs/cond-mat/0701574
dc.identifierhttp://arxiv.org/abs/cond-mat/0701574
dc.identifierPhys. Rev. A 75, 062116 (2007)
dc.identifierdoi:10.1103/PhysRevA.75.062116
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/133380
dc.subjectMesoscale and Nanoscale Physics
dc.subjectChemical Physics
dc.subjectQuantum Physics
dc.titleDecoherence under many-body system-environment interactions: a stroboscopic representation based on a fictitiously homogenized interaction rate
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