F Theory on K3xK3 and Instantons on 7-branes

Details F Theory on K3xK3 and Instantons on 7-branes F Theory on K3xK3 and Instantons on 7-branes

1997-03-27

arxiv.org/abs/hep-th/9703194v1

Nucl.Phys. B510 (1998) 232-246

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, harvmac

Scientific paper

10.1016/S0550-3213(97)00636-6

We discuss N=2 supersymmetric compactifications to four dimensions from the point of view of F-theory and heterotic theory. In a relatively simple setup, we illustrate the spectral theory for vector bundles on K3xT^2 and discuss the heterotic -- F-theory map. The moduli space of instantons on the 7-brane wrapped around K3 is discussed from the point of view of Higgs mechanism in the effective four-dimensional N=2 theory. This allows us to elaborate on the transitions between various branches of the moduli space of the heterotic/F-theory. We also describe the F-theory compactification on smooth K3xK3 without the 3-branes in which the anomaly is cancelled by the gauge fields.

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