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The one-dimensional extended Bose–Hubbard model

Pai, Ramesh V and Pandit, Rahul (2003) The one-dimensional extended Bose–Hubbard model. In: Proceedings of the Indian Academy of Sciences: Chemical Sciences, 115 (5-6). pp. 721-726.

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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 density $\rho = 1$, in the U–V plane (U and V 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.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: Boson systems;Quantum statistical theory;Ground state;Elementary excitations;Other topics in quantum fluids and solids;Liquid and solid helium
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 10 Apr 2007
Last Modified: 19 Sep 2010 04:35
URI: http://eprints.iisc.ernet.in/id/eprint/9913

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