78 citations · 235 across the 10 of their papers we have counts for
10 papers
Creation of cosmological magnetic fields in a bouncing cosmology
J. M. Salim, N. Souza, S. E. Perez Bergliaffa +1
We show (in a completely analytical and exact manner) that an efficient magnetic field amplification method is operative during the bounce in a time-dependent gauge coupling model.…
Analysis of static and spherically-symmetric solutions in NDL theory of gravitation
M. Novello, S. E. Perez Bergliaffa, K. E. Hibberd
We investigate a static solution with spherical symmetry of a recently proposed field theory of gravitation. In this so-called NDL theory, matter interacts with gravity in accordan…
Analog black holes in flowing dielectrics
M. Novello, S. Perez Bergliaffa, J. Salim +2
We show that a flowing dielectric medium with a linear response to an external electric field can be used to generate an analog geometry that has many of the formal properties of a…
Singularities in General Relativity coupled to nonlinear electrodynamics
M. Novello, S. E. Perez Bergliaffa, J. M. Salim
We study here some consequences of the nonlinearities of the electromagnetic field acting as a source of Einstein's equations on the propagation of photons. We restrict to the part…
A nongravitational wormhole
F. Baldovin, M. Novello, S. E. Perez Bergliaffa +1
Using the effective metric formalism for photons in a nonlinear electromagnetic theory, we show that a certain field configuration in Born-Infeld electromagnetism in flat spacetime…
Electromagnetic waves in a wormhole geometry
S. E. Perez Bergliaffa, K. E. Hibberd
We investigate the propagation of electromagnetic waves through a static wormhole. It is shown that the problem can be reduced to a one-dimensional Schrödinger-like equation with a…
Inhomogeneous scalar field solutions and inflation
S. E. Perez Bergliaffa, K. E. Hibberd
We present new exact cosmological inhomogeneous solutions for gravity coupled to a scalar field in a general framework specified by the parameter . The equations of motion (and…
High energy protons from PKS 1333-33
L. A. Anchordoqui, G. E. Romero, S. E. Perez Bergliaffa +1
In this letter we give an account of the possible acceleration of protons in the outer radio lobes of the active galaxy PKS 1333-33. We also make estimates of the arrival energy sp…
Cylindrically symmetric spinning Brans-Dicke spacetimes with closed timelike curves
Luis A. Anchordoqui, Santiago E. Perez Bergliaffa, Marta L. Trobo +1
We present here three new solutions of Brans-Dicke theory for a stationary geometry with cylindrical symmetry in the presence of matter in rigid rotation with . All th…
Axiomatic foundations of quantum mechanics revisited: the case for systems
Santiago E. Perez Bergliaffa, Gustavo E. Romero, Hector Vucetich
We present an axiomatization of non-relativistic Quantum Mechanics for a system with an arbitrary number of components. The interpretation of our system of axioms is realistic and…