Gauge-invariant condensation in the nonequilibrium quark-gluon plasma
High Energy Physics - Phenomenology
2020-08-19 v2 Quantum Gases
High Energy Physics - Lattice
Abstract
The large density of gluons, which is present shortly after a nuclear collision at very high energies, can lead to the formation of a condensate. We identify a gauge-invariant order parameter for condensation based on elementary non-perturbative excitations of the plasma, which are described by spatial Wilson loops. Using real-time lattice simulations, we demonstrate that a self-similar transport process towards low momenta builds up a macroscopic zero mode. Our findings reveal intriguing similarities to recent discoveries of condensation phenomena out of equilibrium in table-top experiments with ultracold Bose gases.
Keywords
Cite
@article{arxiv.1909.06147,
title = {Gauge-invariant condensation in the nonequilibrium quark-gluon plasma},
author = {Jürgen Berges and Kirill Boguslavski and Mark Mace and Jan M. Pawlowski},
journal= {arXiv preprint arXiv:1909.06147},
year = {2020}
}
Comments
5 pages, 3 figures; v2: journal version, add. section comparing to thermal case and extended discussion