172 citations · 2.5k across the 84 of their papers we have counts for
84 papers
Primordial magnetogenesis in a bouncing model with dark energy
Marcus V. Bomfim, Emmanuel Frion, Nelson Pinto-Neto +1
We investigate primordial magnetogenesis within a quantum bouncing model driven by a scalar field, focusing on various non-minimal couplings between the electromagnetic field and t…
Inflation and late-time accelerated expansion driven by -essence degenerate dynamics
Alexsandre L. Ferreira Junior, Nelson Pinto-Neto, Jorge Zanelli
We consider a k-essence model in which a single scalar field can be responsible for both primordial inflation and the present observed acceleration of the cosmological background g…
Radiation-dominated bouncing model with slow contraction and inflation
Piero A. P. Molinari, Paola C. M. Delgado, Rodrigo F. Pinheiro +1
A very simple non-singular inflationary model is presented where the unique matter content is a radiation fluid. The model slowly contracts from a very large, almost empty and flat…
The Unruh effect under the de Broglie-Bohm perspective
Matheus M. A. Paixão, Olesya Galkina, Nelson Pinto-Neto
We investigate the Minkowski ground state associated with a real massless scalar field as seen by an accelerated observer under the perspective of the de Broglie-Bohm quantum theor…
The Hubble Rate Trouble: An Effective Field Theory of Dark Matter
Alvaro S. de Jesus, Nelson Pinto-Neto, Farinaldo S. Queiroz +2
The Hubble constant inferred from the 6-parameter fit to the CMB power spectrum conflicts with the value obtained from direct measurements via type Ia supernova and Cepheids observ…
New formalism to define vacuum states for scalar fields in curved space-times
Mariana Penna-Lima, Nelson Pinto-Neto, Sandro D. P. Vitenti
The problem of finding a vacuum definition for a single quantum field in curved space-times is discussed under a new geometrical perspective. The phase space dynamics of the quantu…