  Turbulence, the complicated fluid behavior of nonlinear and statistical
nature, arises in many physical systems across various disciplines, from tiny
laboratory scales to geophysical and astrophysical ones. The notion of
turbulence in the quantum world was conceived long ago by Onsager and Feynman,
but the occurrence of turbulence in ultracold gases has been studied in the
laboratory only very recently. Albeit new as a field, it already offers new
paths and perspectives on the problem of turbulence. Herein we review the
general properties of quantum gases at ultralow temperatures paying particular
attention to vortices, their dynamics and turbulent behavior. We review the
recent advances both from theory and experiment. We highlight, moreover, the
difficulties of identifying and characterizing turbulence in gaseous
Bose-Einstein condensates compared to ordinary turbulence and turbulence in
superfluid liquid helium and spotlight future possible directions.
