Two loop scalar diagrams from string theory
Jul, 1996
15 pages
Published in:
- Phys.Lett.B 388 (1996) 65-76
e-Print:
- hep-th/9607141 [hep-th]
Report number:
- DFTT-41-96,
- POLFIS-TH-05-96
View in:
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Abstract:
We show how to obtain correctly normalized expressions for the Feynman diagrams of theory with an internal symmetry group, starting from tachyon amplitudes of the open bosonic string, and suitably performing the zero--slope limit by giving an arbitrary mass to the tachyon. In particular we present explicit results for the two--loop amplitudes of theory, in preparation for the more interesting case of the multiloop amplitudes of non--abelian gauge theories.Note:
- 15 pages, plain Latex, 5 figures included Report-no: DFTT 41/96; POLFIS-TH 9605
- phi**n model: 3
- symmetry: U(N)
- string model
- scattering amplitude: tachyon
- scattering amplitude: higher-order
- higher-order: 2
- analytic properties
References(14)
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