Dimensional crossover for universal scaling far from equilibrium

Abstract

We perform a dynamical finite-size scaling analysis of a nonequilibrium Bose gas which is confined in the transverse plane. Varying the transverse size, we establish a dimensional crossover for universal scaling properties far from equilibrium. Our results suggest that some aspects of the dynamical universal behavior of anisotropic systems can be classified in terms of fractional spatial dimensions. We discuss our findings in view of recent experimental results with quasi one-dimensional setups of quenched ultracold quantum gases.

9 pages, 7 figures

References in corpus (3)

• Non-thermal fixed points: effective weak-coupling for strongly correlated systems far from equilibrium
• Exact hydrodynamics of a trapped dipolar Bose-Einstein condensate
• Universality far from equilibrium: From superfluid Bose gases to heavy-ion collisions

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• Anomalous non-thermal fixed point in a quasi-two-dimensional dipolar Bose gas