Holographic model of superfluidity
High Energy Physics - Theory
2009-11-13 v3
Abstract
We study a holographic model of a relativistic quantum system with a global U(1) symmetry, at non-zero temperature and density. When the temperature falls below a critical value, we find a second-order superfluid phase transition with mean-field critical exponents. In the symmetry-broken phase, we determine the speed of second sound as a function of temperature. As the velocity of the superfluid component relative to the normal component increases, the superfluid transition goes through a tricritical point and becomes first-order.
Cite
@article{arxiv.0809.4870,
title = {Holographic model of superfluidity},
author = {C. P. Herzog and P. K. Kovtun and D. T. Son},
journal= {arXiv preprint arXiv:0809.4870},
year = {2009}
}
Comments
17 pages, 4 figures; v2 ref added; v3 small corrections, published in PRD