13 citations · 32 across the 6 of their papers we have counts for
7 papers
Deformation Quantization of Schutz Quantum Cosmology: Relational Time, Constraints, and Physical States
Raphael Fracalossi
A controlled correspondence is established between reduced relational dynamics and extended constrained quantization in an FLRW cosmology coupled to a Schutz perfect fluid. A canon…
The effects of dark energy on the early universe with radiation and Bose-Einstein condensate
G. A. Monerat, F. G. Alvarenga, S. V. B. Gonçalves +4
This work analyzes the effects of quantization on a Friedmann-Lema\^ıtre-Robertson-Walker (FLRW) model with positive curvature and material content composed of a Bose-Einstein cond…
Quantum Cosmology with many fluids and the choice of cosmological time
G. A. Monerat, C. G. M. Santos, F. G. Alvarenga +4
In this work we propose the quantization of a cosmological model describing the primordial universe filled with five barotropic fluids, namely: radiation, dust, vacuum, cosmic stri…
Primordial Universe with radiation and Bose-Einstein condensate
F. G. Alvarenga, L. G. Ferreira Filho, R. Fracalossi +5
In this work we derive a scenario {in which} the early universe consists of {radiation fluid} and Bose-Einstein condensate. The possibility of gravitational self-interaction due to…
Dynamics of a perfect fluid through velocity potentials with aplication in quantum cosmology
F. G. Alvarenga, R. Fracalossi, R. G. Furtado +1
We review the Eulerian description of hidrodynamics using Seliger-Whitham's formalism (in classical case) and Schutz's formalism (in relativistic case). In these formalisms, the ve…
Classical and quantum cosmology with two perfect fluids: stiff matter and radiation
F. G. Alvarenga, R. Fracalossi, R. C. Freitas +1
In this work the homogeneous and isotropic Universe of Friedmann-Robertson-Walker is studied in the presence of two fluids: stiff matter and radiation described by the Schutz's for…
The Kantowski-Sachs quantum model with stiff matter fluid
F. G. Alvarenga, R. Fracalossi, R. C. Freitas +1
In this paper we study the quantum cosmological Kantowski-Sachs model and solve the Wheeler-DeWitt equation in minisuperspace to obtain the wave function of the corresponding unive…