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Forums
Physics
Beyond the Standard Models
The wrong turn of string theory: our world is SUSY at low energies
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[QUOTE="mitchell porter, post: 3216992, member: 103130"] I think you are misinterpreting the paper. The "duality" in dual models (Dolen-Horn-Schmid duality) is that you get the amplitude by summing over s-channel diagrams [I]or[/I] by summing over t-channel diagrams, not by summing over both at the same time as in ordinary field theory. The string theory explanation is that the dual-model s-channel sum and the dual-model t-channel sum are just different representations of the same sum over string histories, but with the world-sheet cut in different ways (in order to define a path integral). This is mentioned very briefly in Appendix A of Polchinski (page 332, "Relation to the Hilbert space formalism"), where he calls it "world-sheet duality". But this is not supersymmetry. [/QUOTE]
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Physics
Beyond the Standard Models
The wrong turn of string theory: our world is SUSY at low energies
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