77 citations
- Universidade do Estado do Rio de JaneiroBR38 papers
- Universidade Federal FluminenseBR7 papers
- Centro Brasileiro de Pesquisas FísicasBR6 papers
- Universidade Federal de Juiz de ForaBR6 papers
- Universidade Federal do Rio de JaneiroBR5 papers
- National ObservatoryBR3 papers
- Universidade de São PauloBR3 papers
- University of California, BerkeleyUS3 papers
- Centre National d'Études SpatialesFR2 papers
- Halbleiterlabor of the Max-Planck-SocietyDE2 papers
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8 papers · 1 filter
The dynamics of the early universe in a model with radiation and a generalized Chaplygin gas
G. A. Monerat, C. G. M. Santos, G. Oliveira-Neto +2
The early universe is modeled through the quantization of a Friedmann-Robertson-Walker model with positive curvature of the spatial hypersurfaces. In this model, the universe is fi…
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…
Quantum cosmology of a Hořava-Lifshitz model coupled to radiation
G. Oliveira-Neto, L. G. Martins, G. A. Monerat +1
In the present paper, we canonically quantize an homogeneous and isotropic Hořava-Lifshitz cosmological model, with constant positive spatial sections and coupled to radiation. We…
Vacuum solutions in the Einstein-Aether Theory
M. Campista, R. Chan, M. F. A. da Silva +3
The Einstein-Aether (EA) theory belongs to a class of modified gravity theories characterized by the introduction of a time-like unit vector field, called aether. In this scenario,…
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…
Noncommutativity in the early Universe
G. Oliveira-Neto, M. Silva de Oliveira, G. A. Monerat +1
In the present work, we study the noncommutative version of a quantum cosmology model. The model has a Friedmann-Robertson-Walker geometry, the matter content is a radiative perfec…