Previous results on the dual multiloop amplitude are extended by obtaining, from the unitarization procedure, the measure and domain of integration. The singularities of the amplitude, which arise from end points in the integration domain, are discussed by exploiting the simple geometrical interpretation of the theory. In particular, we investigate the singularities which give rise to divergences in planar diagrams as well as Pomeranchuk-like singularities in nonplanar ones.
Properties of dual multiloop amplitudes / Amati, Daniele; Alessandrini, V.. - In: NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. A. - ISSN 1124-1853. - 4:4(1971), pp. 793-844. [10.1007/BF02731520]
Properties of dual multiloop amplitudes
Amati, Daniele;
1971-01-01
Abstract
Previous results on the dual multiloop amplitude are extended by obtaining, from the unitarization procedure, the measure and domain of integration. The singularities of the amplitude, which arise from end points in the integration domain, are discussed by exploiting the simple geometrical interpretation of the theory. In particular, we investigate the singularities which give rise to divergences in planar diagrams as well as Pomeranchuk-like singularities in nonplanar ones.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
