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We introduce the confluent version of the quantum-mechanical supersymmetry(SUSY) formalism for the Dirac equation with a pseudoscalar potential.Application of the formalism to spectral problems is discussed, regularityconditions for the transformed potentials are derived, and normalizability ofthe transformed solutions is established. Our findings extend and complementformer results.

The confluent supersymmetry algorithm for Dirac equations with pseudoscalar potentials