Primordial magnetic fields and gravitational baryogenesis in nonlinear electrodynamics

Journal Article · Wed Jul 15 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.023013· OSTI ID:21316187

Mosquera Cuesta, Herman J ^[1]; Lambiase, Gaetano ^[2]; INFN, Sezione di Napoli ^[3]

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1. Instituto de Cosmologia, Relatividade e Astrofisica (ICRA-BR), Centro Brasileiro de Pesquisas Fisicas (CBPF), Rua Dr. Xavier Sigaud 150, 22290-180, RJ (Brazil)
2. Dipartimento di Fisica 'E.R. Caianiello', Universita di Salerno, 84081 Baronissi (Italy)
3. Italy

The amplification of the primordial magnetic fields and the gravitational baryogenesis, a mechanism that allows one to generate the baryon asymmetry in the Universe by means of the coupling between the Ricci scalar curvature and the baryon current, are reviewed in the framework of the nonlinear electrodynamics. To study the amplification of the primordial magnetic field strength, we write down the gauge invariant wave equations and then solve them (in the long wavelength approximation) for three different eras of the Universe: de Sitter, the reheating, and the radiation-dominated era. Constraints on parameters entering the nonlinear electrodynamics are obtained by using the amplitude of the observed galactic magnetic fields and the baryon asymmetry, which are characterized by the dimensionless parameters r{approx}10{sup -37} and {eta}{sub B} < or approx. 9x10{sup -11}, respectively.

• OSTI ID: 21316187
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 2 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLIFICATION
AMPLITUDES
APPROXIMATIONS
ASYMMETRY
BARYONS
COUPLING
DE SITTER SPACE
ELECTRODYNAMICS
GAUGE INVARIANCE
MAGNETIC FIELDS
NONLINEAR PROBLEMS
UNIVERSE
WAVE EQUATIONS
WAVELENGTHS