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math-ph2025
On the convergence of the Born series for Coulomb potentials
Ethan Sussman, Jared Wunsch
We provide a short proof of the convergence of the Born series on asymptotically conic manifolds, at sufficiently high energy. The potential is allowed to have multiple Coulomb sin…
math-ph2025
Singularities of Dirac-Coulomb propagators
Dean Baskin, MichaÅ Wrochna, Jared Wunsch
In this paper we study singularities of propagators and -point functions for Dirac fields in a Coulomb potential, possibly with a -dependent smooth part for . W…