2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53529Following a suggestion made by Tseytlin, we investigate the case when one replaces the transverse part of the bosonic action by an $n=2$ supersymmetric sigma-model with a symmetric homogeneous Kählerian target space. As conjectured by Tseytlin, the metric is shown to be exactly known since the beta function is known to reduce to its one-loop value.12 pages, CPT-93/P.2879,CERN-TH-6828/93, plain TeXHigh Energy Physics - Theorytext