Covariant One Loop Fermion Emission Amplitudes in Closed String Theories
نویسندگان
چکیده
We calculate the 2 fermionboson and the 4 fermion scattering amplitudes at the one loop in the NSR formulation of the heterotic and type II superstring theories using the covariant fermion emission vertex. The results are shown to agree with well known amplitudes calculated in the light-cone gauge in the GreenSchwarz formulation. The agreement of the 4 fermion amplitude entails the use of a new O-function identity which we also prove.
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تاریخ انتشار 1987