Wave turbulence in box-trapped Bose gases

Studies of turbulent cascades of excitations in box-trapped Bose gases [1] have in recent years offered a new view on this topic, thanks to the possibilities to observe the system on all relevant lengthscales and timescales, tune the dissipation lengthscale and the strength of interactions driving the cascade, and measure the scale-invariant particle and energy fluxes carried by the cascade. I will give an overview of our recent and ongoing studies on this topic, including the time-resolved observation of the 'birth of turbulence' in a 2D gas [2] and the experimental construction of an equilibrium-like universal equation of state for wave turbulence in a 3D gas [3].

[1] Emergence of a turbulent cascade in a quantum gas, N. Navon, A. L. Gaunt, R. P. Smith, and Z. Hadzibabic, Nature 539, 72 (2016).

[2] Emergence of Isotropy and Dynamic Scaling in 2D Wave Turbulence in a Homogeneous Bose Gas, Phys. Rev. Lett. 129, 190402 (2022).

[3] Universal equation of state for wave turbulence in a quantum gas, L. H. Dogra et al., arXiv:2212.08652