# Power spectrum of large-scale magnetic fields from Gravitoelectromagnetic inflation with a decaying cosmological parameter - High Energy Physics - Theory

Power spectrum of large-scale magnetic fields from Gravitoelectromagnetic inflation with a decaying cosmological parameter - High Energy Physics - Theory - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: Introducing a variable cosmological parameter $\Lambda t$ in a geometricalmanner from a 5D Riemann-flat metric, we investigate the origin and evolutionof primordial magnetic fields in the early universe, when the expansion isgoverned by a cosmological parameter $\Lambda t$ that decreases with time.Using the gravitoelectromagnetic inflationary formalism, but without theFeynman gauge, we obtain the power of spectrums for large-scale magnetic fieldsand the inflaton field fluctuations during inflation. A very important fact isthat our formalism is {\em naturally non-conformally invariant}.

Autor: Federico Agustin Membiela Mar del Plata University and CONICET, Mauricio Bellini Mar del Plata University and CONICET

Fuente: https://arxiv.org/