107 research outputs found
Classical analogous of quantum cosmological perfect fluid models
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 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.Comment: Latex file, 10 pages, 3 figure
An analysis of helium primordial nucleosynthesis with a variable cosmological coupling
PCV66 Pharmacoeconomic Analysis of Azilsartan Medoxomil in Patients With Arterial Hypertension: Comparison With Valsartan, Telmisartan, Losartan and Irbesartan in the Mexican Context
Physical properties and particle-size fractions of soil organic matter in crop-livestock integration
Polyphase deformation and metamorphism of the Cuiabå group in the Poconé region (MT), Paraguay Fold and Thrust Belt: kinematic and tectonic implications
Enraizamento de estacas semilenhosas de mirtilo sob o efeito de diferentes concentraçÔes de ĂĄcido indolbutĂrico
Atributos quĂmicos de um latossolo vermelho sob diferentes sistemas de preparo, adubaçÔes e plantas de cobertura
Avaliação da qualidade de solos sob diferentes coberturas florestais e de pastagem no sul de Minas Gerais
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