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"Gauge theories and instantons in closed string background"

Relatore: Maria Luisa Frau- Universita` e INFN di Torino

Sala Feynman
09 Dicembre 2004 ore 15.30

We recall the derivation of four dimensional gauge theories and their instantons from open string amplitudes on D3/D(-1) bound states. Using these techniques we show that N=1/2 SYM in Non Anti-commutative superspace and its instantons can be recovered by tree-level computation of open-closed string amplitudes in RNS formalism.