Microscopic Computational Model of a Superfluid
Other Condensed Matter
2015-05-14 v1
Abstract
A finite one-dimensional microscopic model of a superfulid is presented. The model consists of interacting Bose particles with an additional impurity particle confined to a ring. Both semiclassical and exact quantum calculations reveal dissipationless motion of impurity with increased effective mass due to its interaction with the excitations of Bose fluid. It is shown that both the excitation spectrum of Bose fluid and the excitation spectrum of impurity can be analyzed using the structure of the ground state of the system.
Cite
@article{arxiv.0911.2216,
title = {Microscopic Computational Model of a Superfluid},
author = {Mikhail Ovchinnikov and Alexey Novikov},
journal= {arXiv preprint arXiv:0911.2216},
year = {2015}
}