Calculation of the Scattering Amplitudes
نویسنده
چکیده
It is well known that the high order calculations of the observables within the perturbation theory has the serious difficulties (especially, if we take into account the polarization effects). Method of the direct calculation of amplitudes simplifies these calculations essentially. There is an even number (2N) of fermions in initial and final state for any reaction with Dirac particles. Therefore every diagram contains N non-closed fermion lines. The expression Mif = ūfQui = Tr(Quiūf) (1.1)
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تاریخ انتشار 2005