Quantum Phase Transitions for Bosons in One Dimension

Details Quantum Phase Transitions for Bosons in One Dimension Quantum Phase Transitions for Bosons in One Dimension

1997-05-26

arxiv.org/abs/cond-mat/9705261v1

Physics

Condensed Matter

11 pages, revtex, 2 eps-figures

Scientific paper

10.1209/epl/i1997-00305-x

We study the ground state phase diagram and the critical properties of interacting Bosons in one dimension by means of a quantum Monte Carlo technique. The direct experimental realization is a chain of Josephson junctions. For finite-range interactions we find a novel intermediate phase which shows neither solid order nor superfluidity. We determine the location of this phase and study the critical behaviour of the various transitions. For on-site interaction only, we map out the phase diagram as a function of the hopping strength and the chemical potential.

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