Derives new upper limits on the Carroll-Field-Jackiw Lorentz-violating parameter k_AF from agreement between dipole models and geomagnetic observations, improving prior bounds by four orders of magnitude.
Campbell.Introduction to geomagnetic fields
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Limits on the Carroll-Field-Jackiw electrodynamics from geomagnetic data
Derives new upper limits on the Carroll-Field-Jackiw Lorentz-violating parameter k_AF from agreement between dipole models and geomagnetic observations, improving prior bounds by four orders of magnitude.