Primordial magnetic fields and nonlinear electrodynamics

Journal Article · Tue Jan 15 04:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.023530· OSTI ID:21035818

Kunze, Kerstin E ^[1]

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1. Departamento de Fisica Fundamental, and Instituto Universitario de Fisica Fundamental y Matematicas (IUFFyM), Universidad de Salamanca, Plaza de la Merced s/n, E-37008 Salamanca (Spain)

The creation of large scale magnetic fields is studied in an inflationary universe where electrodynamics is assumed to be nonlinear. After inflation ends electrodynamics becomes linear and thus the description of reheating and the subsequent radiation dominated stage are unaltered. The nonlinear regime of electrodynamics is described by Lagrangians having a power-law dependence on one of the invariants of the electromagnetic field. It is found that there is a range of parameters for which primordial magnetic fields of cosmologically interesting strengths can be created.

• OSTI ID: 21035818
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 2 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
ELECTRODYNAMICS
ELECTROMAGNETIC FIELDS
INFLATIONARY UNIVERSE
LAGRANGIAN FUNCTION
MAGNETIC FIELDS
NONLINEAR PROBLEMS