Electric charge is a magnetic dipole when placed in a background magnetic field

Abstract

It is demonstrated, owing to the nonlinearity of QED, that a static charge placed in a strong magnetic field\ $B$\ is a magnetic dipole (besides remaining an electric monopole, as well). Its magnetic moment grows linearly with $B$ as long as the latter remains smaller than the characteristic value of $1.2\cdot 10^{13}\unit{G}$ but tends to a constant as $B$ exceeds that value. The force acting on a densely charged object by the dipole magnetic field of a neutron star is estimated.

References in corpus (9)

• The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
• Electrically Charged Strange Quark Stars
• Effective Lagrangian in nonlinear electrodynamics and its properties of causality and unitarity
• Properties of Bare Strange Stars Associated with Surface Electric Fields
• QED with external field: Hamiltonian treatment for anisotropic medium formed by the Lorentz-non-invariant vacuum
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Cited by in corpus (10)

• Magnetic response to applied electrostatic field in external magnetic field
• Coulomb field in a constant electromagnetic background
• Photon propagation in noncommutative QED with constant external field
• When electric charge becomes also magnetic
• Collective behavior of light in vacuum
• Magnetic response from constant backgrounds to Coulomb sources
• Interaction between two point-like charges in nonlinear electrostatics
• Singular electromagnetic fields in nonlinear electrodynamics with a constant background field
• Nonlinearity in Electro- and Magneto-statics with and without External Field
• Discreteness of Point Charge in Nonlinear Electrodynamics