Instanton propagator in scalar model: exact expression and contribution to instanton induced processes

Details Instanton propagator in scalar model: exact expression and contribution to instanton induced processes Instanton propagator in scalar model: exact expression and contribution to instanton induced processes

2000-01-17

arxiv.org/abs/hep-ph/0001156v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, Latex, 1 ps figure. Based on the talk given by Yu.K. at the XIVth Workshop on Quantum Field Theory and High Energy P

Scientific paper

The propagator in the instanton background in the -lambda phi^4 scalar model in four dimensions is studied. Leading and sub-leading terms of its asymptotics for large momenta and its on-shell double residue are calculated. These results are applied to the analysis of the initial state and initial-final state corrections and the calculation of the next-to-leading (propagator) correction to the exponent of the cross section of multiparticle scattering processes.

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