Coexisting ordinary elasticity and superfluidity in a model of defect-free supersolid
Other Condensed Matter
2009-11-11 v1
Abstract
We present the mechanics of a model of supersolid in the frame of the Gross-Pitaevskii equation at that do not require defects nor vacancies. A set of coupled nonlinear partial differential equations plus boundary conditions is derived. The mechanical equilibrium is studied under external constrains as steady rotation or external stress. Our model displays a paradoxical behavior: the existence of a non classical rotational inertia fraction in the limit of small rotation speed and no superflow under small (but finite) stress nor external force. The only matter flow for finite stress is due to plasticity.
Keywords
Cite
@article{arxiv.cond-mat/0611402,
title = {Coexisting ordinary elasticity and superfluidity in a model of defect-free supersolid},
author = {Christophe Josserand and Yves Pomeau and Sergio Rica},
journal= {arXiv preprint arXiv:cond-mat/0611402},
year = {2009}
}
Comments
6 pages, 2 figures