We consider the effective action for massive two-dimensional QED in flat Euclidean space–time in the background of a general square-integrable magnetic field with finite range. It is shown that its small mass limit is controlled by the chiral anomaly. New results for the low-energy scattering of electrons in 2+1 dimensions in static, inhomogeneous magnetic fields are also presented.
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M. P. Fry (2000) studied this question.
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