Large-N Solution of the Heterotic Weighted Non-Linear Sigma-Model

Abstract

We study a heterotic two-dimensional N=(0,2) gauged non-linear sigma-model whose target space is a weighted complex projective space. We consider the case with N positively and N^~=N_F - N negatively charged fields. This model is believed to give a description of the low-energy physics of a non-Abelian semi-local vortex in a four-dimensional N=2 supersymmetric U(N) gauge theory with N_F > N matter hypermultiplets. The supersymmetry in the latter theory is broken down to N=1 by a mass term for the adjoint fields. We solve the model in the large-N approximation and explore a two-dimensional subset of the mass parameter space for which a discrete Z_{N-N^~} symmetry is preserved. Supersymmetry is generically broken, but it is preserved for special values of the masses where a new branch opens up and the model becomes super-conformal.

34 pages, 10 figures, references added

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Cited by in corpus (5)

• Effective World-Sheet Theory for Non-Abelian Semilocal Strings in N = 2 Supersymmetric QCD
• Quantum Dynamics of Low-Energy Theory on Semilocal Non-Abelian Strings
• Large-N Solution of the Heterotic CP(N-1) Model with Twisted Masses
• On Grassmannian Heterotic Sigma Model
• Heterotic Flux Geometry from Chiral Gauge Dynamics