Holographic Thermal Relaxation in Superfluid Turbulence

TL;DR

This paper uses holographic duality to study vortex dynamics in 2D turbulent superfluids, revealing a two-body decay process and confirming experimental and theoretical predictions near the critical temperature.

Contribution

It introduces a holographic approach to analyze vortex decay in superfluid turbulence, aligning numerical results with experimental and effective theory predictions.

Findings

Vortex number decay follows a two-body annihilation process.

Decay rate near critical temperature matches effective theory.

Numerical results agree with experimental data.

Abstract

Holographic duality provides a first-principles approach to investigate real time processes in quantum many-body systems, in particular at finite temperature and far-from-equilibrium. We use this approach to study the dynamical evolution of vortex number in a two-dimensional (2D) turbulent superfluid through numerically solving its gravity dual. We find that the temporal evolution of the vortex number can be well fit statistically by two-body decay due to the vortex pair annihilation featured relaxation process, thus confirm the previous suspicion based on the experimental data for turbulent superfluid in highly oblate Bose-Einstein condensates. Furthermore, the decay rate near the critical temperature is in good agreement with the recently developed effective theory of 2D superfluid turbulence.