Ring exchanges and the supersolid phase of 4He
Statistical Mechanics
2007-05-23 v1
Abstract
Using Path Integral Monte Carlo we calculate exchange frequencies in bulk hcp 4He as atoms undergo ring exchange. We fit the frequencies to a lattice model and examine whether such atoms could become a supersolid, that is have a non-classical rotational inertia. We find that the scaling with respect to the number of exchanging atoms is such that superfluid behavior will not be observed in a perfect 4He crystal.
Cite
@article{arxiv.cond-mat/0409336,
title = {Ring exchanges and the supersolid phase of 4He},
author = {D. M. Ceperley and B. Bernu},
journal= {arXiv preprint arXiv:cond-mat/0409336},
year = {2007}
}