Double-Scaling Limit of Heterotic Bundles and Dynamical Deformation in CFT

Abstract

We consider heterotic string theory on Eguchi-Hanson space, as a local model of a resolved A_1 singularity in a six-dimensional flux compactification, with an Abelian gauge bundle turned on and non-zero torsion. We show that in a suitable double scaling limit, that isolates the physics near the non-vanishing two-cycle, a worldsheet conformal field theory description can be found. It contains a heterotic coset whose target space is conformal to Eguchi-Hanson. Starting from the blow-down limit of the singularity, it can be viewed as a dynamical deformation of the near-horizon fivebrane background. We analyze in detail the spectrum of the theory in particular examples, as well as the important role of worldsheet non-perturbative effects.

45 pages, no figures; ver2: typos corrected, references added, an extra tadpole-free model covered

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Cited by in corpus (10)

• The Revival of (0,2) Linear Sigma Models
• Heterotic Resolved Conifolds with Torsion, from Supergravity to CFT
• Geometries, Non-Geometries, and Fluxes
• The Abelian Heterotic Conifold
• Gauge Threshold Corrections for N = 2 Heterotic Local Models with Flux, and Mock Modular Forms
• T-Duality in Gauged Linear Sigma-Models with Torsion
• Heterotic warped Eguchi-Hanson spectra with five-branes and line bundles
• Local models of heterotic flux vacua: spacetime and worldsheet aspects
• Heterotic Hyper-Kahler Flux Backgrounds
• New supersymmetric index of heterotic compactifications with torsion