3 papers
gr-qc2016
The van der Waals fluid and its role in cosmology
Rudinei C. S. Jantsch, Marcus H. B. Christmann, Gilberto M. Kremer
We analyze the properties of a generic cosmological fluid described by the van der Waals equation of state. Exact solutions for the energy density evolution are found as implicit f…
gr-qc2005
Inflationary and dark energy regimes in 2+1 dimensions
M. H. Christmann, F. P. Devecchi, G. M. Kremer +1
In this work we investigate the behavior of three-dimensional (3D) cosmological models. The simulation of inflationary and dark-energy-dominated eras are among the possible results…
gr-qc2004
Transition from accelerated to decelerated regimes in JT and CGHS cosmologies
M. H. Christmann, F. P. Devecchi, G. M. Kremer +1
In this work we discuss the possibility of positive-acceleration regimes, and their transition to decelerated regimes, in two-dimensional (2D) cosmological models. We use general r…