Dark energy models through nonextensive Tsallis' statistics
  The accelerated expansion of the Universe is one of the greatest challenges of modern physics. One candidate to explain this phenomenon is a new field called dark energy. In this work we have used the Tsallis nonextensive statistical formulation of the Friedmann equation to explore the Barboza-Alcaniz and Chevalier-Polarski-Linder parametric dark energy models and the Wang-Meng and Dalal vacuum decay models. After that, we have discussed the observational tests and the constraints concerning the Tsallis nonextensive parameter. 
Rafael da C. Nunes, Ed\'esio M. Barboza Jr., Everton M. C. Abreu and   Jorge Ananias Neto
gr-qc