Collisions of two degenerate quark Fermi liquids are studied. It is shown that there arise instabilities, which manifest themselves in propagation of growing oscillations corresponding to the modes existing in a Fermi liquid at rest. Quark jets are likely to appear in the directions of the...

The kinetic equation for the relativistically invariant distribution function of particles (and also stars or galaxies) moving in a self-consistent or given gravitational field is formulated. The solution of the kinetic equation for the case of Friedmanian cosmological models is obtained. This...

Chain nuclear reaction is studied in diffusion approximation. Multiplicating medium in the form of a long cylinder is considered. The propagation velocity of nuclear reaction is obtained in the overcritical regime. It is given by the formula analogues to that for slow burning and in the simplest...

A universal phenomenological approach to study evolution of long-wave fluctuations caused by the external random force is developed. The Furutzu–Novikov theorem is generalized for non-Gaussian processes. General kinetic and hydrodynamic equations that include the effect of long-wave...

The ground state and low-lying collective modes of Bose–Einstein condensate (BEC) of atoms with arbitrary spin in a magnetic field is studied using Bogoliubov's model for weakly interacting Bose gas. The equation for vectorial order parameter valid at temperature T→0 is derived and its...