  Bose-Einstein condensation (BEC) and evaporation of transverse photons from
the Bose condensate is studied in the case when the density of plasma does not
change. The generation of the longitudinal photons (photonikos) by the
transverse photons (photons) in terms of the Cherenkov type of radiation in a
uniform plasma is demonstrated. The Bogoliubov energy spectrum is derived for
photonikos. A new physical phenomena of the "Compton" scattering type in
nonlinear photon gas is discussed. To this end, a new version of the Pauli
equation in the wavevector representation is derived. The formation of
Bose-Einstein condensate and evaporation of photons from the condensate is
investigated by means of the newly derived Fokker-Planck equation for
photonikos. The relevance of this work to recent discovery of black hole X-ray
jets is pointed out.
