The one-dimensional extended Bose-Hubbard model

descriptionPublicationkeyboard_double_arrow_right Article 01 Oct 2003 India English Publisher:Springer Science and Business Media LLCJournal:Journal of Chemical Sciences, volume 115, pages 721-726 (issn: 0253-4134, eissn: 0973-7103,

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Authors: Pai, Ramesh V; Pandit, Rahul;

doi: 10.1007/bf02708262

The one-dimensional extended Bose-Hubbard model

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Abstract

We use the finite-size, density-matrix-renormalization-group(DMRG) method to obtain the zero-temperature phase diagram of the one-dimensional, extended Bose-Hubbard model, for mean boson densityρ = 1, in theU-V plane (U andV are respectively, onsite and nearest-neighbour repulsive interactions between bosons). The phase diagram includes superfluid (SF), bosonic-Mott-insulator(MI), and mass-density-wave (MDW) phases. We determine the natures of the quantum phase transitions between these phases.

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Physics

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