Using of unitarity equations for the calculation of fermion interaction amplitudes in the superstring theory

Details Using of unitarity equations for the calculation of fermion interaction amplitudes in the superstring theory Using of unitarity equations for the calculation of fermion interaction amplitudes in the superstring theory

2001-12-17

arxiv.org/abs/hep-th/0112143v1

Physics

High Energy Physics

High Energy Physics - Theory

18 pp, Latex

Scientific paper

The unitarity equations for the boson interaction amplitudes in the superstring theory are used to calculate the interaction amplitudes including the Ramond states, which are 10-fermion and Ramond bosons. The n-loop, 4-point amplitude with two massless Neveu-Schwarz bosons and two massless Ramond states is obtained explicitly. It is shown that, in addition, the unitarity equations require some integral relations for local functions determining the amplitude. For the tree amplitude the validness of the above integral relations is verified.

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