This item is available under a Creative Commons License for non-commercial use only
Particles and fields physics
In a previous work [E.M. Prodanov, R.I. Ivanov and V.G. Gueorguiev, Reissner-Nordström expansion, Astropart. Phys. 27 (2007) 150], we proposed a classical model for the expansion of the Universe during the radiation-dominated epoch based on the gravitational repulsion of the Reissner-Nordström geometry — naked singularity description of particles that "grow" with the drop of the temperature. In this work we model the Universe during the Reissner-Nordström expansion as a van der Waals gas and determine the equation of state.
Proodanov, E., Ivanov, R. & Gueorguiev, V. (2008). Equation of State for a van der Waals Universe during Reissner-Nordstrom Expansion. Journal of High Energy Physics, vol. 06. doi:10.1088/1126-6708/2008/06/060