On the Calabi-Yau Phase of (0,2) Models

Abstract

We study the Calabi-Yau phase of a certain class of (0,2) models. These are conjectured to be equivalent to exact (0,2) superconformal field theories which have been constructed recently. Using the methods of toric geometry we discuss in a few examples the problem of resolving the singularities of such models and calculate the Euler characteristic of the corresponding gauge bundles.

LaTex; 22 pages, the last part of the concluding section has been modified

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