A critical look at 50 years particle theory from the perspective of the crossing property
نویسنده
چکیده
Almost all constructive ideas in particle theory of the last 5 decades beyond Lagrangian quantization have originated from an incomplete or erroneous understanding of one of the deepest ideas (after scattering theory) which links on-shell with off-shell objects: the crossing property. The bootstrap S-matrix approach, the dual S-matrix model and string theory would not have come into being without this property which arose in connection with quantum field theoretic scattering amplitudes but, apart from a special configuration, was never established in a nonperturbative
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