Gravitational Bose-Einstein condensation in the kinetic regime
  We study Bose-Einstein condensation and formation of Bose stars in the
virialized dark matter halos/miniclusters by universal gravitational
interactions. We prove that this phenomenon does occur and it is described by
kinetic equation. We give expression for the condensation time. Our results
suggest that Bose stars may form kinetically in the mainstream dark matter
models such as invisible QCD axions and Fuzzy Dark Matter.
