Mini-Instantons

dc.creatorBranchina, Vincenzo
dc.creatorPolonyi, Janos
dc.date1994-01-17
dc.date.accessioned2026-07-07T04:19:58Z
dc.date.available2026-07-07T04:19:58Z
dc.descriptionIt is shown that the inhomogeneous saddle points of scale invariant theories make the semiclassical expansion sensitive on the choice of non-renormalizable operators. In particular, the instanton fugacity and the beta function of the two dimensional non-linear sigma model depends on apparently non-renormalizable operators. This represents a non-perturbative breakdown of that concept of universality which is based on low dimensional operators.
dc.description25 pg. LPT-93-3
dc.identifierhttps://arxiv.org/abs/hep-th/9401079
dc.identifierhttp://arxiv.org/abs/hep-th/9401079
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/53787
dc.subjectHigh Energy Physics - Theory
dc.titleMini-Instantons
dc.typetext

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