2008/09/30 by Christopher P. Herzog, C. P. Herzog, Pavel Kovtun +3 · 7 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #High-Energy Particle Collisions Research #hep-th
paper · pdf · doi:10.1103/physrevd.79.066002
17 pages, 4 figures; v2 ref added; v3 small corrections, published in PRD
openalex publication_date 2009/03/04 · arxiv created 2009/06/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study a holographic model of a relativistic quantum system with a global U(1) symmetry, at nonzero 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.