Helium-4 Luttinger liquids in nanopores

Details Helium-4 Luttinger liquids in nanopores Helium-4 Luttinger liquids in nanopores

2011-01-11

arxiv.org/abs/1101.2206v3

Phys. Rev. Lett. 106, 105303 (2011)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures; revised version fixes a typo in the sign of the chemical potential on page 2 and a mislabeling of the valu

Scientific paper

10.1103/PhysRevLett.106.105303

We study the low temperature properties of a helium-4 fluid confined in nanopores, using large-scale Quantum Monte Carlo simulations with realistic He-He and He-pore interactions. In the narrow-pore limit, the system can be described by the quantum hydrodynamic theory known as Luttinger liquid theory with a large Luttinger parameter, corresponding to the dominance of solid tendencies and strong susceptibility to pinning by a periodic or random potential from the pore walls. On the other hand, for wider pores, the central region appears to behave like a Luttinger liquid with a smaller Luttinger parameter, and may be protected from pinning by the wall potential, offering the possibility of experimental detection of a Luttinger liquid.

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