Bose Einstein condensation and superfluidity in an open system: theory
Quantum Gases
2009-11-05 v1 Strongly Correlated Electrons
Abstract
We propose a new theoretical formalism which describes the Bose Einstein condensation of weakly interacting bosons with finite life time interacting with a thermal bath. We show that if a quasi-thermal distribution function of particles is achieved, the elementary excitations of the condensate show a linear spectrum characteristic of a superfluid, with a renormalized sound velocity with respect to the equilibrium case.
Cite
@article{arxiv.0911.0807,
title = {Bose Einstein condensation and superfluidity in an open system: theory},
author = {G. Malpuech and D. Solnyshkov},
journal= {arXiv preprint arXiv:0911.0807},
year = {2009}
}