arXiv subjects

N. Souza

Publications and source records attributed to N. Souza.

2 recordsLinked to original sources

arXiv2006

Creation of cosmological magnetic fields in a bouncing cosmology

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. The cosmological magnetic fields so generated have particular spectral features, and may be observed by future CMB measurements and by direct cluster measurements.

astro-ph↗

arXiv2004

Production of photons in a bouncing universe

Using a new non-singular solution,it is shown that the production of photons in dilaton electrodynamics in a cosmological setting is increased if the effect of matter creation on the geometry is taken into account. This increment may be related to the problem of the origin of magnetic fields in the universe.

astro-ph↗