Browsing Institutt for energi og prosessteknikk by Journals "International Journal of Modern Physics D"

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    • Thermodynamic aspects of of entropic cosmology with viscosity 

      Brevik, Iver Håkon; Timoshkin, A. V. (Peer reviewed; Journal article, 2021)
      We describe the evolution of the early and late universe from thermodynamic considerations, using the generalized nonextensive Tsallis entropy with a variable exponent. A new element in our analysis is the inclusion of a ...

    • Viscous Cosmology for Early- and Late-Time Universe 

      Brevik, Iver Håkon; Grøn, Øyvind; de Haro, Jaume; Odintsov, Sergei D.; Saridakis, Emmanuel N. (Journal article; Peer reviewed, 2017)
      From a hydrodynamicist’s point of view the inclusion of viscosity concepts in the macroscopic theory of the cosmic fluid would appear most natural, as an ideal fluid is after all an abstraction (exluding special cases such ...