Gauge invariant wave equations in curved space-times and primordial magnetic fields

Journal Article · Wed Sep 15 04:00:00 EDT 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.063502· OSTI ID:20705194

Lambiase, G ^[1]; di Salerno, INFN-Gruppo Collegato ^[2]; Prasanna, A R ^[3]

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1. Dipartimento di Fisica 'E.R. Caianiello', Universita di Salerno, 84081 Baronissi, Sa (Italy)
2. Italy
3. Physical Research Laboratory, Navrangpura, Ahmedabad 380 009 (India)

The inflationary production of magnetic field seeds for galaxies is discussed. The analysis is carried out by writing the wave equation of the electromagnetic field in curved space-times. The conformal invariance is broken by taking into account the interaction of the electromagnetic field with the curvature tensor of the form {lambda}R{sub {alpha}}{sub {beta}}{sub {gamma}}{sub {delta}}F{sup {alpha}}{sup {beta}}F{sup {gamma}}{sup {delta}}. Such a term induces an amplification of the magnetic field during the reheating phase of the universe, but no growth of the magnetic field occurs in the de Sitter epoch. The resulting primordial magnetic field turns out to have strengths of astrophysical interest.

• OSTI ID: 20705194
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 6 Vol. 70; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLIFICATION
CONFIGURATION MIXING
CONFORMAL INVARIANCE
COSMOLOGY
DE SITTER GROUP
ELECTROMAGNETIC FIELDS
GALAXIES
GAUGE INVARIANCE
MAGNETIC FIELDS
QUANTUM FIELD THEORY
SPACE-TIME
SYMMETRY BREAKING
TENSORS
UNIVERSE
WAVE EQUATIONS