Maxwell-Kostelecký Electromagnetism and Cosmic Magnetization

Details Maxwell-Kostelecký Electromagnetism and Cosmic Magnetization Maxwell-Kostelecký Electromagnetism and Cosmic Magnetization

2008-12-19

arxiv.org/abs/0812.3745v2

Phys.Lett.B675:155-158,2009

Astronomy and Astrophysics

Astrophysics

10 pages, 1 figure, minor revisions; accepted for publication in Physics Letters B

Scientific paper

10.1016/j.physletb.2009.04.011

The Lorentz violating term in the photon sector of Standard Model Extension, $\mathcal{L}_K = -{$\frac14$} (k_F)_{\alpha \beta \mu \nu} F^{\alpha \beta} F^{\mu \nu}$ (here referred to as the Kosteleck\'{y} term), breaks conformal invariance of electromagnetism and enables a superadiabatic amplification of magnetic vacuum fluctuations during inflation. For a wide range of values of parameters defining Lorentz symmetry violation and inflation, the present-day magnetic field can have an intensity of order of nanogauss on megaparsec scales and then could explain the large-scale magnetization of the universe.

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