Regular Article - Theoretical Physics
Bound state inequality for high mass exchanges in a scalar field model
Department of Applied Mathematics, University of Campinas, PO Box 6065, SP 13083-970, Campinas, Brazil
2 Department of Physics, University of Lecce and INFN Lecce, PO Box 193, CAP 73100, Lecce, Italy
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Published online: 8 January 2008
Ladder diagrams are relevant for the study of bound states. The condition on the coupling strength for the existence of a bound state has been deduced in a scalar field theory for the case of low mass exchanges. We apply this approach to the case of very high mass exchanges.
© Springer-Verlag , 2008