Accretion of rotating fluids onto stationary solutions

We consider a general stationary solution and derive the general laws for accretion of rotating perfect fluids. For nondegenerate and degenerate Fermi and Bose fluids we derive new effects that mimic the center-of-mass-energy effect of two colliding particles in the vicinity of horizons. Nondegenerate fluids see their chemical potential grow arbitrarily and ultrarelativistic Fermi fluids see their specific enthalpy and Fermi momentum grow arbitrarily too while the latter vanishes gradually for nonrelativistic Fermi fluids. For degenerate Bose fluids two scenarios remain possible as the fluid approaches a horizon: (a) The Bose-Einstein condensation ceases or (b) the temperature drops gradually down to zero. The critical flow is also investigated.

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