Qualitative description of the universe in the interacting fluids scheme

Cruz, Miguel (Facultad de Física, Universidad Veracruzana, Xalapa, Veracruz, 91000, Mexico) ; Lepe, Samuel (Instituto de Física, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2950, Valparaíso, Chile) ; Morales-Navarrete, Gerardo (Facultad de Física, Universidad Veracruzana, Xalapa, Veracruz, 91000, Mexico)

02 May 2019

Abstract: In this work we present a qualitative description of the evolution of a curved universe when we consider the interacting scheme for the constituents of the dark sector. The resulting dynamics can be modeled by a set of Lotka-Volterra type equations. For this model a future singularity is allowed, therefore the cyclic behavior for the energy interchange between the components of the universe is present only at some stage of the cosmic evolution. Due to the presence of the future singularity, the model exhibits global instability.


Published in: Nuclear Physics B (2019)
Published by: Elsevier
DOI: 10.1016/j.nuclphysb.2019.114623
License: CC-BY-3.0



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