Evolution of Interacting Viscous Dark Energy Model in Einstein Cosmology

Details Evolution of Interacting Viscous Dark Energy Model in Einstein Cosmology Evolution of Interacting Viscous Dark Energy Model in Einstein Cosmology

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011chphl..28b9801c&link_type=abstract

Chinese Physics Letters, Volume 28, Issue 2, pp. 029801 (2011).

Physics

Scientific paper

We investigate the evolution of the viscous dark energy (DE) interacting with the dark matter (DM) in the Einstein cosmology model. By using the linearizing theory of the dynamical system, we find that, in our model, there exists a stable late time scaling solution which corresponds to the accelerating universe. We also find the unstable solution under some appropriate parameters. In order to alleviate the coincidence problem, some authors considered the effect of quantum correction due to the conform anomaly and the interacting dark energy with the dark matter. However, if we take into account the bulk viscosity of the cosmic fluid, the coincidence problem will be softened just like the interacting dark energy cosmology model. That is to say, both the non-perfect fluid model and the interacting the dark energy cosmic model can alleviate or soften the singularity of the universe.

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