Chiral Symmetry Breaking by a Magnetic Field in Weak-coupling QED
C.N. Leung, Y.J. Ng, and A.W. Ackley
TL;DR
This paper demonstrates that a constant magnetic field can induce dynamical chiral symmetry breaking in weak-coupling massless QED using nonperturbative Schwinger-Dyson equations.
Contribution
It provides a nonperturbative analysis showing magnetic field-induced chiral symmetry breaking in weak-coupling QED, a novel insight into external field effects.
Findings
Chiral symmetry is broken by an external magnetic field.
The effect occurs even at arbitrarily weak coupling.
The Schwinger-Dyson equation approach confirms the phenomenon.
Abstract
Using the nonperturbative Schwinger-Dyson equation, we show that chiral symmetry in weak-coupling massless QED is dynamically broken by a constant but arbitrarily strong external magnetic field.
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