Modifications of CMB spectrum by nonextensive statistical mechanics
  Cosmic microwave background radiation can supply us some most significant
parts of the information on the universe. Some researchers believe that The
gravitational system cannot be decribed by the standard statistical mechanics.
In this article we apply Tsallis nonextensive statistical mechanics to
investigate CMB spectrum and related cosmological processes. Based on recent
observational data we find that the nonextensive statistical mechanics can
modify the values of related physical quantites. Since the value of physical
quantites have changed, some processes, such as recombination, can be affected.
We have investigated the anisotropy of the CMB for two effects: the dipole
anisotropy of CMB and the Sunyaev-Zel'dovich effect. We find that the dipole
anisotropy of CMB cannot be modified by the nonextensive statistical mechanics.
However, the standard result of the Sunyaev-Zel'dovich effect should be
modified by nonextensive statistical mechanics. In principle, future work can
distinguish these effects.
