184 citations · 272 across the 3 of their papers we have counts for
3 papers
astro-ph.CO2009★ 75 cited
Non-adiabatic dark fluid cosmology
W. S. Hipolito-Ricaldi, H. E. S. Velten, W. Zimdahl
We model the dark sector of the cosmic substratum by a viscous fluid with an equation of state , where is the fluid-expansion scalar and is the coefficient of bulk v…
astro-ph2007★ 184 cited
Bulk Viscous Cosmology
R. Colistete, J. C. Fabris, J. Tossa +1
We propose a scenario in which the dark components of the Universe are manifestations of a single bulk viscous fluid. Using dynamical system methods, a qualitative study of the hom…
gr-qc2006★ 13 cited
Duality invariance and cosmological dynamics
Luis P. Chimento, Winfried Zimdahl
A duality transformation that interrelates expanding and contracting cosmological models is shown to single out a duality invariant, interacting two-component description of any ir…