Scaling properties of one-dimensional driven-dissipative condensates
Abstract
We numerically investigate the scaling properties of a one-dimensional driven-dissipative condensate described by a stochastic complex Ginzburg-Landau equation (SCGLE). We directly extract the static and dynamical scaling exponents from the dynamics of the condensate's phase field, and find that both coincide with the ones of the one-dimensional Kardar-Parisi-Zhang (KPZ) equation. We furthermore calculate the spatial and the temporal two-point correlation functions of the condensate field itself. The decay of the temporal two-point correlator assumes a stretched-exponential form, providing further quantitative evidence for an effective KPZ description. Moreover, we confirm the observability of this non-equilibrium scaling for typical current experimental setups with exciton-polariton systems, if cavities with a reduced factor are used.
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Cite
@article{arxiv.1412.5579,
title = {Scaling properties of one-dimensional driven-dissipative condensates},
author = {Liang He and Lukas M. Sieberer and Ehud Altman and Sebastian Diehl},
journal= {arXiv preprint arXiv:1412.5579},
year = {2015}
}
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7 pages