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Singularity analysis in $A_n$ Affine Toda Theories | | H.W. Braden
; H.S. Cho
; J.D. Kim
; I.G. Koh
; R. Sasaki
; | | Date: |
9 Jul 1992 | | Journal: | Prog.Theor.Phys. 88 (1992) 1205-1212 | | Subject: | hep-th | | Abstract: | The leading and the subleading Landau singularities in affine Toda field theories are examined in some detail. Formulae describing the subleading simple pole structure of box diagrams are given explicitly. This leads to a new and nontrivial test of the conjectured exact S-matrices for these theories. We show that to the one-loop level the conjectured S-matrices of the $A_n$ Toda family reproduce the correct singularity structure, leading as well as subleading, of the field theoretical amplitudes. The present test has the merit of being independent of the details of the renormalisations. | | Source: | arXiv, hep-th/9207025 | | Services: | Forum | Review | PDF | Favorites | |
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