Electromagnetic properties of the early universe

Journal Article · Sun Jun 15 00:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.124028· OSTI ID:21205191

Takahashi, Keitaro ^[1]; Ichiki, Kiyotomo ^[2]; Sugiyama, Naoshi ^[3]

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1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
2. Research Center for the Early Universe, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)
3. Department of Physics and Astrophysics, Graduate School of Science, Nagoya University, Nagoya 464-8602 (Japan)

Detailed physical processes of magnetic field generation from density fluctuations in the prerecombination era are studied. Solving Maxwell equations and the generalized Ohm's law, the evolutions of the net charge density, the electric current, and the electromagnetic field are solved. Unlike most of the previous works, we treat electrons and photons as separate components under the assumption of tight coupling. We find that generation of the magnetic field due to density fluctuations takes place only from the second order of both perturbation theory and the tight coupling approximation.

• OSTI ID: 21205191
• Journal Information: Physical Review. D, Particles Fields, Vol. 77, Issue 12; Other Information: DOI: 10.1103/PhysRevD.77.124028; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
CHARGE DENSITY
COUPLING
DENSITY
ELECTRIC CURRENTS
ELECTROMAGNETIC FIELDS
ELECTRONS
EVOLUTION
FLUCTUATIONS
MAGNETIC FIELDS
MAXWELL EQUATIONS
PERTURBATION THEORY
PHOTONS
UNIVERSE