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arXiv · 0812.3745

Maxwell-Kostelecký Electromagnetism and Cosmic Magnetization

L. Campanelli·P. Cea
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Abstract

The Lorentz violating term in the photon sector of Standard Model Extension, $\mathcal{L}_K = -{$\frac14$} (k_F)_{αβμν} F^{αβ} F^{μν}$ (here referred to as the Kostelecký 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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L. Campanelli, P. Cea. 2009-04-07. Maxwell-Kostelecký Electromagnetism and Cosmic Magnetization. https://doi.org/10.1016/j.physletb.2009.04.011

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