Computing the Complete Massless Spectrum of a Landau-Ginzburg Orbifold

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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34 pp, reference added

Scientific paper

10.1016/0550-3213(93)90093-5

We develop techniques to compute the complete the massless spectrum in heterotic string compactification on N=2 supersymmetric Landau-Ginzburg orbifolds. This includes not just the familiar charged fields, but also the gauge singlets. The number of gauge singlets can vary in the moduli space of a given compactification and can differ from what it would be in the large radius limit of the corresponding Calabi-Yau. Comparison with exactly soluble Gepner models provides a confirmation of our results at Gepner points. Our methods carry over straightforwardly to $(0,2)$ Landau-Ginzburg models.

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