Luttinger Liquid in the Core of a Screw Dislocation in Helium-4
This is the pre-published version harvested from ArXiv. The published version is located at http://prl.aps.org/abstract/PRL/v99/i3/e035301
On the basis of first-principles Monte Carlo simulations we find that the screw dislocation along the hexagonal axis of an hcp 4He crystal features a superfluid (at T→0) core. This is the first example of a regular quasi-one-dimensional supersolid—the phase featuring both translational and superfluid orders, and one of the cleanest cases of a Luttinger-liquid system. In contrast, the same type of screw dislocation in solid H2 is insulating.
M Boninsegni, Kuklov, Pollet, Nikolai Prokof'ev, Boris Svistunov, and Troyer. "Luttinger Liquid in the Core of a Screw Dislocation in Helium-4" Physical Review Letters 99.3 (2007).
Available at: http://works.bepress.com/nikolai_prokofev/26