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Quantum Phase Transitions for Bosons in One Dimension

Reinhard Baltin·Karl-Heinz Wagenblast
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Abstract

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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Reinhard Baltin, Karl-Heinz Wagenblast. 1997-05-26. Quantum Phase Transitions for Bosons in One Dimension. https://doi.org/10.1209/epl%2Fi1997-00305-x

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