Abstract
The gauge invariant two-point Fermion Green's function is calculated within the framework of the Bloch-Nordsieck approximation. Its dependence on the contour is investigated. It is shown that in the case of a straight contour the gaugeinvariant fermion propagator is equal to the free one.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 1, pp. 65–70, January, 1985.
In conclusion the author thanks V. I. Savrin and N. B. Skachkov for interest in this work and for valuable remarks, and also A. A. Afonin, V. N. Kapshai, and O. P. Solovtsova for useful discussions of the results.
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Solovtsov, I.L. Gauge invariant Green's function in the bloch-nordsieck model. Soviet Physics Journal 28, 56–60 (1985). https://doi.org/10.1007/BF00896053
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DOI: https://doi.org/10.1007/BF00896053