78 citations · 1.5k across the 126 of their papers we have counts for
6 papers · 1 filter
The Hamiltonian formalism for scalar fields coupled to gravity in a cosmological background
Alex E. Bernardini, O. Bertolami
A novel routine to investigate the scalar fields in a cosmological context is discussed in the framework of the Hamiltonian formalism. Starting from the Einstein-Hilbert action cou…
The CB energy density through the quantum measurement theory
Alex E. Bernardini, Victor A. S. V. Bittencourt
We apply concepts from the quantum measurement theory to obtain some cosmological neutrino background (CB) properties and discuss their relevance in defining theoretical bounds…
Accretion of non-minimally coupled generalized Chaplygin gas into black holes
Manuela G. Rodrigues, Alex E. Bernardini
The mass evolution of Schwarzschild black holes by the absorption of scalar fields is investigated in the scenario of the generalized Chaplygin gas (GCG). The GCG works as a unific…
Cyclically deformed defects and topological mass constraints
Alex E. Bernardini, Roldao da Rocha
A systematic procedure for obtaining defect structures through cyclic deformation chains is introduced and explored in detail. The procedure outlines a set of rules for analyticall…
Cosmological neutrino entropy changes due to flavor statistical mixing
Alex E. Bernardini
Entropy changes due to delocalization and decoherence effects should modify the predictions for the cosmological neutrino background (CB) temperature when one treats neutrino fl…
Dynamical dispersion relation for ELKO dark spinor fields
Alex E. Bernardini, Roldao da Rocha
An intrinsic mass generation mechanism for exotic ELKO dark matter fields is scrutinized, in the context of the very special relativity (VSR). Our results are reported on unravelin…