Non-Thermal Fixed Point in a Holographic Superfluid

Understand

We study the far-from-equilibrium dynamics of a (2+1)-dimensional superfluid at finite temperature and chemical potential using its holographic description in terms of a gravitational system in 3+1 dimensions.

• Starting from various initial conditions corresponding to ensembles of vortex defects we numerically evolve the system to long times.
• At intermediate times the system exhibits Kolmogorov scaling the emergence of which depends on the choice of initial conditions.
• We further observe a universal late-time regime in which the occupation spectrum and different length scales of the superfluid exhibit scaling behaviour.