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Phys. Rev. Lett. 65, 1765–1768 (1990)

Quantum critical phenomena in one-dimensional Bose systems

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Ghassan George Batrouni
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550

Richard T. Scalettar and Gergely T. Zimanyi
Physics Department, University of California, Davis, California 95616

Received 5 June 1990; published in the issue dated 1 October 1990

We use quantum Monte Carlo techniques to study the critical properties of an interacting-boson model in one dimension. The phase diagram consists of a series of (Mott-) insulating phases at commensurate fillings and of a superfluid phase. From the critical behavior of the superfluid density and the compressibility, we measure the exponents ν and z, which agree with predictions based on a scaling analysis.

© 1990 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.65.1765
DOI:
10.1103/PhysRevLett.65.1765
PACS:
67.40.Db, 05.30.Jp, 05.70.Jk