Present status of the Bethe-Salpeter approach in Minkowski space
arXiv:1312.2220 · doi:10.1007/s00601-014-0846-y
Abstract
Recently developed methods allowing to find the solutions of the Bethe-Salpeter equations in Minkowski space, both for the bound and scattering states, are reviewed. For the bound states, one obtains the bound state mass and the corresponding BS amplitude. For the scattering states, the phase shifts (complex above the meson creation threshold) and the half-off-shell BS amplitude are found. Using these solutions, the elastic and transition electromagnetic form factors are calculated.
10 pages, 9 figures. Contribution to the proceedings of the Workshop: Light-Cone 2013, Satellite Meeting on the Bethe-Salpeter equation, Skiathos, Greece, May 24-25, 2013. To be published in Few-Body Systems
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