Kolmogorov-type non-thermal fixed points and beyond of far-from-equilibrium dilute system: ultra-cold Fermi gas
The study investigates non-equilibrium dynamics of a dilute ultra-cold Fermi gas using real-time methods based on the Schwinger-Keldysh formalism. It finds stationary solutions characterized as Kolmogorov-type non-thermal fixed points, which describe scale-invariant particle fluxes. The research extends this to strongly coupled systems via the 1/N expansion to find scaling behaviors beyond these initial fixed points.