Point-like spin-dependent interaction in calculations of self-energy ladder diagrams

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dc.creatorNechaev, I. A.
dc.creatorNagy, I.
dc.creatorEchenique, P. M.
dc.creatorChulkov, E. V.
dc.date2006-06-19
dc.date.accessioned2026-07-07T07:12:45Z
dc.date.available2026-07-07T07:12:45Z
dc.descriptionAn instantaneous and zero-range spin-dependent interaction, derived by summing an infinite number of electron-hole ladder diagrams within a local approximation, is analyzed as a function of the electron gas density and the relative spin polarization. The strength of such an interaction is defined by an integral of a statically screened Coulomb interaction with a spatially localized weighting factor. This weighting factor represents the mutually uncorrelated motion of an electron-hole pair in singlet or triplet spin states ($S^z=0,\pm1$). An implementation, based on a Yukawa-type interaction with a spin-polarization-dependent Thomas-Fermi screening length, is given.
dc.description5 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0606489
dc.identifierhttp://arxiv.org/abs/cond-mat/0606489
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/112183
dc.subjectOther Condensed Matter
dc.titlePoint-like spin-dependent interaction in calculations of self-energy ladder diagrams
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