Evidence of Luttinger liquid behavior in one-dimensional dipolar quantum gases

Abstract

The ground state and structure of a one-dimensional Bose gas with dipolar repulsions is investigated at zero temperature by a combined Reptation Quantum Monte Carlo (RQMC) and bosonization approach. A non trivial Luttinger-liquid behavior emerges in a wide range of intermediate densities, evolving into a Tonks-Girardeau gas at low density and into a classical quasi-ordered state at high density. The density dependence of the Luttinger exponent is extracted from the numerical data, providing analytical predictions for observable quantities, such as the structure factor and the momentum distribution. We discuss the accessibility of such predictions in current experiments with ultracold atomic and molecular gases.

4 pages, 3 EPS figures, Revtex 4

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• Bose-Einstein condensation of chromium
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• Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
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Cited by in corpus (4)

• Dipolar bosons in a planar array of one-dimensional tubes
• Collective excitations of trapped one-dimensional dipolar quantum gases
• Structure and melting behavior of classical bilayer crystals of dipoles
• The low-energy excitation spectrum of one-dimensional dipolar quantum gases