Klaus Scharnhorst - Publications

D. Hennig, D. Robaschik, K. Scharnhorst: Aspects of the renormalization of QED in a singular external gauge potential. In: V.A. Matveev, V.A. Rubakov, A.N. Tavkhelidze, P.G. Tinyakov (Eds.): Proceedings of the International Seminar Quarks '90, Telavi, USSR, May 14-19, 1990. World Scientific, Singapore 1991, pp. 218-222 (DOI: 10.1142/9789814439336_0021) [Karl Marx University Leipzig Preprint KMU-NTZ-90-9]. [INSPIRE record]

Abstract: QED is considered in the presence of a delta function shaped external gauge potential with support on a plane. The divergent part of the 1-loop fermion self-energy in this background field configuration is calculated. On the basis of this example specific renormalization problems arising in QED in a singular background are commented.

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