Series Expansions for Variable Electron Density

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dc.creatorWeihong, Zheng
dc.creatorHamer, C. J.
dc.creatorOitmaa, J.
dc.creatorSingh, R. R. P.
dc.date2001-12-20
dc.date.accessioned2026-07-07T02:43:53Z
dc.date.available2026-07-07T02:43:53Z
dc.descriptionWe have developed a series expansion method for calculating the zero-temperature properties of lattice electron models for variable electron density, i.e. for finite doping away from the half-filled case. This is done by introducing particle fluctuation terms in both the unperturbed Hamiltonian and perturbation. The method is demonstrated by application to the 2-chain $t-J$ ladder, where we provide comparison with previous work as well as obtaining a number of new results.
dc.description11 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0112371
dc.identifierhttp://arxiv.org/abs/cond-mat/0112371
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18689
dc.subjectStrongly Correlated Electrons
dc.titleSeries Expansions for Variable Electron Density
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