Lucas Madeira
University of São Paulo - madeira@ifsc.usp.brQuantum turbulence (QT) is characterized by many degrees of freedom interacting non-linearly to produce disordered states, both in space and time. The advances in trapping, cooling, and tuning the interparticle interactions in atomic Bose-Einstein condensates (BECs) make them excellent candidates for studying QT. Much progress has been made in understanding and characterizing QT since the first observation of turbulence in a trapped BEC. A milestone was identifying an energy cascade demonstrated by a power-law in the energy spectrum. However, there are some intrinsic difficulties in determining the range and exponent of the power law. Hence, other strategies are needed to overcome these issues. We present approaches based on energy and particle fluxes and the entropy of the cloud as alternative methods to identify and characterize QT.
Related paper: https://www.mdpi.com/1099-4300/22/9/956