Stochastic Navier-Stokes equation and advection of a tracer field: One-loop renormalization near $d=4$

N. V. Antonov, N. M. Gulitskiy, M. M. Kostenko, T. Lučivjanský

Published 2017-10-10Version 1

The renormalization group approach and the operator product expansion technique are applied to the model of a tracer field advected by the Navier-Stokes velocity ensemble for a compressible fluid. The model is considered in the vicinity of the specific space dimension $d=4$. The properties of the equal-time structure functions are investigated. The multifractal behaviour of various correlation functions is established. All calculations are performed in the leading one-loop approximation.