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# Eric Sharpe : Kähler Cone Substructure

To define a consistent perturbative geometric heterotic compactification one must specify not only a Calabi-Yau manifold M but also a bundle E on M. The bundle E is required to satisfy a subtle constraint known as ``stability,'' which depends upon the Kähler form. This dependence upon the Kähler form is highly nontrivial---the Kähler cone splits into subcones, with a distinct moduli space of bundles in each subcone---and has long been overlooked by physicists. In this talk we shall describe this behavior and its physical manifestation.

**Category**: String Theory**Duration**: 01:01:31**Date**: October 29, 1998 at 4:00 PM**Views**: 30-
**Tags:**seminar, String Theory Seminar

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