منابع مشابه
2 Multi - Regge form of QCD amplitudes
The multi–Regge form of QCD amplitudes with gluon exchanges is proved in the next-to-leading approximation. The proof is based on the bootstrap relations, which are required for the compatibility of this form with the s-channel unitarity. We show that the fulfillment of all these relations ensures the Reggeized form of energy dependent radiative corrections order by order in perturbation theory...
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Recursion relations for integrals of amplitudes over the phase space, i.e. for partial wave amplitudes, are introduced. In their simplest form these integrals are proportional to the s-wave amplitudes and represent rigorous lower bounds on the total cross sections. The connection with classical field equations in D dimensions is established. Previous results on multiparticle amplitudes are easi...
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It is well-known that string theory started from the proposal of scattering amplitudes which may grasp the two major structures of soft interaction phenomenology in a condensed form : resonances and Regge poles. Two types of amplitudes were proposed for four-point amplitudes, see Fig.1. The Veneziano amplitude corresponds to Reggeon exchanges with non-vacuum quantum numbers and the Shapiro-Vira...
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A dynamical theory of ix 'lltiparticle amplitudes, based on a functional integral representation embodying collective long-range cor relations, is applied to the calculation of Regge intercepts and residues. Poles arising in conventional multiperipheral models will characteristically be modified in three ways: promotion, renormalisatioa, and a proliferation of dynamical secondary trajectories, ...
متن کاملExact multiparticle amplitudes at threshold in large-N component phi4 theory.
I derive the set of recurrence relations between the amplitudes of multiparticle production at threshold in the standard large-N limit of the O(N)-symmetric φ 4 theory which sums all relevant diagrams with arbitrary number of loops. I find an exact solution to the recurrence relations using the Gelfand–Diki˘ ı representation of the diagonal resolvent of the Schrödinger operator. The result coin...
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ژورنال
عنوان ژورنال: Physics Reports
سال: 1974
ISSN: 0370-1573
DOI: 10.1016/0370-1573(74)90012-x