Non-equilibrium dynamics of interacting Fermi systems in quench experiments
Quantum Gases
2009-10-20 v2 Strongly Correlated Electrons
Abstract
We describe the dynamics of two component non-interacting ultracold Fermions which are initially in thermal equilibrium and undergo a rapid quench to either the repulsive or attractive side of a Feshbach resonance. The short time dynamics is dominated by the exponentially growing collective modes. We study the Stoner instability and formation of ferromagnetic textures on the repulsive side, and the pairing instability towards BCS or FFLO-like states (determined by the population imbalance) on the attractive side. In each case, we evaluate the growth rate of unstable modes and predict the typical lengthscale of textures to be formed.
Cite
@article{arxiv.0908.3483,
title = {Non-equilibrium dynamics of interacting Fermi systems in quench experiments},
author = {Mehrtash Babadi and David Pekker and Rajdeep Sensarma and Antoine Georges and Eugene Demler},
journal= {arXiv preprint arXiv:0908.3483},
year = {2009}
}
Comments
4 Pages, 2 Figs