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Instanton propagator and instanton induced processes in scalar model

Yu. A. Kubyshin·P. G. Tinyakov
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Abstract

The propagator in the instanton background in the $(- λϕ^{4})$ 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 analytically. 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 instanton induced multiparticle scattering processes.

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Yu. A. Kubyshin, P. G. Tinyakov. 2000-10-19. Instanton propagator and instanton induced processes in scalar model. https://doi.org/10.1103/physrevd.65.085007

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