Modified kinetic theory of Bose systems taking into account slow   hydrodynamical processes
  An approach to the description of kinetics which taking into account the large-scale hydrodynamic transport processes for quantum Bose system is proposed. The nonequilibrium statistical operator which consistently describes both the kinetic and nonlinear hydrodynamic fluctuations in quantum liquid is calculated. Using this operator the coupled equations for quantum one-particle distribution function and functional of hydrodynamic variables: densities of momentum, energies and number of particles are obtained. 
P.A. Hlushak, M.V. Tokarchuk
cond-mat.stat-mech