Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2006-11-27
Phys. Rev. A 75, 051602 (2007)
Physics
Condensed Matter
Other Condensed Matter
4 pages, 3 EPS figures, Revtex 4
Scientific paper
10.1103/PhysRevA.75.051602
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.
Chiofalo M.-L.
Citro Roberta
de Palo S.
Orignac Edmond
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