# The Hubble parameter in the early universe with viscous QCD matter and finite cosmological constant

@article{Tawfik2011TheHP, title={The Hubble parameter in the early universe with viscous QCD matter and finite cosmological constant}, author={A. Tawfik}, journal={Annalen der Physik}, year={2011}, volume={523} }

The evolution of a flat, isotropic and homogeneous universe is studied. The background geometry in the early phases of the universe is conjectured to be filled with causal bulk viscous fluid and dark energy. The energy density relations obtained from the assumption of covariant conservation of energy‐momentum tensor of the background matter in the early universe are used to derive the basic equation for the Hubble parameter H. The viscous properties described by ultra‐relativistic equations of…

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