%0 Journal Article
%T Classical analogous of quantum cosmological perfect fluid models
%A A. B. Batista
%A J. C. Fabris
%A S. V. B. Goncalves
%A J. Tossa
%J Physics
%D 2000
%I arXiv
%R 10.1016/S0375-9601(01)00229-8
%X Quantization in the mini-superspace of a gravity system coupled to a perfect fluid, leads to a solvable model which implies singularity free solutions through the construction of a superposition of the wavefunctions. We show that such models are equivalent to a classical system where, besides the perfect fluid, a repulsive fluid with an equation of state $p_Q = \rho_Q$ is present. This leads to speculate on the true nature of this quantization procedure. A perturbative analysis of the classical system reveals the condition for the stability of the classical system in terms of the existence of an anti-gravity phase.
%U http://arxiv.org/abs/gr-qc/0011102v1