Novel field theory phenomena from F theory and D-branes

Abstract

Talk presented in the 97 Karpatcz winter school. We describe Sen's work on F theory on K3 and its reflection on the world-volume field theory on a D3-brane probe. Field theories on a multiple of probes are analyzed. We construct a 4d N=1 superconformal probe theory which is invariant under electric-magnetic duality via a compactification to six dimensions on T^6/Z_2 x Z_2.

latex file, 14 pages, 15 figs, epsf.sty, espcrc2.sty

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