Oscillations in turbulence-condensate system

Abstract

We consider developed turbulence in the Gross-Pitaevsky model where condensate appears due to an inverse cascade. Despite being fully turbulent, the system demonstrates non-decaying periodic oscillations around a steady state, when turbulence and condensate periodically exchange a small fraction of waves. We show that these collective oscillations are not of a predator-prey type, as was suggested earlier; they are due to phase coherence and anomalous correlations imposed by the condensate.

4 pages, 5 figures

References in corpus (3)

• Growing condensate in two-dimensional turbulence
• Many-body physics in the classical-field description of a degenerate Bose gas
• Phase transitions in optical turbulence

Cited by in corpus (4)

• Wave Turbulence and thermalization in one-dimensional chains
• Self-similar formation of an inverse cascade in vibrating elastic plates
• A plausible model of inflation driven by strong gravitational wave turbulence
• Evolution of inverse cascades and formation of precondensate in Gross-Pitaevskii turbulence in two dimensions