Divergence of the Bethe-Salpeter wave function at the origin |
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| Authors: | William E Caswell Ronald R Horgan GPeter Lepage |
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| Institution: | Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94305, USA |
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| Abstract: | We point out an error in the proof of Nishijima et al. that the Bethe-Salpeter wave function for composite particles, lying on Regge trajectories, is finite. We describe a simple counter-example drawn from non-relativistic quantum mechanics and cite others from field theory. |
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