Quark anomalous magnetic moment in an extreme magnetic background from perturbative QCD
Eduardo S. Fraga,
Leticia F. Palhares,
Cristian Villavicencio
Abstract:We compute the one-loop QCD correction to the photon-quark-antiquark vertex in an extremely strong magnetic background, i.e., one in which eB is much larger than all other mass scales. We resort to the lowest-Landau level approximation, and consider on-shell fermions. We find that the total magnetic moment is such that the anomalous magnetic moment contributes to the electric part ∼iE3σ3, the other contributions to B·σ and iE·σ⊥ being completely suppressed. We show results for the anomalous magnetic moment of … Show more
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