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astro-ph.CO2020
Purely kinetic k-essence description of barotropic fluid models
Dalibor Perkovic, Hrvoje Stefancic
Purely kinetic k-essence models have been shown in the literature to be a field theory equivalent of barotropic fluid models of dark energy or dark matter-dark energy unification.…
gr-qc2020★ 31 cited
Barotropic fluid compatible parametrizations of dark energy
Dalibor Perkovic, Hrvoje Stefancic
Parametrizations of Equation of state parameter as a function of the scale factor or redshift are frequently used in dark energy modeling. The question investigated in this paper i…