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Bethe-Salpeter equation with cross-ladder kernel in Minkowski and Euclidean spaces

V. A. Karmanov, J. Carbonell, M. Mangin-Brinet

hep-tharXiv:hep-th/0610158

Abstract

Some results obtained by a new method for solving the Bethe-Salpeter equation are presented. The method is valid for any kernel given by irreducible Feynman graphs. The Bethe-Salpeter amplitude, both in Minkowski and in Euclidean spaces, and the binding energy for ladder + cross-ladder kernel are found. We calculate also the corresponding electromagnetic form factor.

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