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Gravitino one-loop contribution to Planckian Scattering | | A.Bellini
; M.Ademollo
; M.Ciafaloni
; | | Date: |
31 Jul 1992 | | Journal: | Nucl.Phys. B393 (1993) 79-94 | | Subject: | hep-th | | Abstract: | Corrections to the semiclassical approximation in nearly forward Planckian energy collisions are here reconsidered. Starting from the one-loop superstring amplitude, we are able to disentangle the first subleading high-energy contribution at large impact parameters, and we thus directly compute the one-loop correction to the superstring eikonal. We finally argue, on the basis of analyticity and unitarity, that gravitinos do not contribute at all to the large distance two-loop ACV correction, which thus acquires a universal ``classical’’ interpretation. | | Source: | arXiv, hep-th/9207113 | | Services: | Forum | Review | PDF | Favorites | |
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