We give a detailed microscopic derivation of gauge and stringy instanton gen erated superpotentials for gauge theories living on D3-branes at Z(3)-orientifold singularities. Gauge instantons are generated by D(-1)-branes and lead to Affleck, Dine and Seiberg (ADS) like superpotentials in the effective N = 1 gauge theories with three generations of bifundamental and anti/symmetricmatter.Stringy instanton effects are generated by Euclidean ED3-branes wrapping four cycles onT(6)/Z(3).They give rise to Majorana masses,Yukawa couplings or non-renormalizable superpotentials depending on the gauge theory.Finally we determine the conditions under which ADS like superpotentials are generated in N = 1gauge theories with adjoints, fundamentals, symmetric and antisymmetric chiral matter.
Bianchi, M., Fucito, F., Morales, J. (2007). D-brane instantons on the T^6 / Z(3) orientifold. JOURNAL OF HIGH ENERGY PHYSICS(7) [10.1088/1126-6708/2007/07/038].
D-brane instantons on the T^6 / Z(3) orientifold
BIANCHI, MASSIMO;
2007-01-01
Abstract
We give a detailed microscopic derivation of gauge and stringy instanton gen erated superpotentials for gauge theories living on D3-branes at Z(3)-orientifold singularities. Gauge instantons are generated by D(-1)-branes and lead to Affleck, Dine and Seiberg (ADS) like superpotentials in the effective N = 1 gauge theories with three generations of bifundamental and anti/symmetricmatter.Stringy instanton effects are generated by Euclidean ED3-branes wrapping four cycles onT(6)/Z(3).They give rise to Majorana masses,Yukawa couplings or non-renormalizable superpotentials depending on the gauge theory.Finally we determine the conditions under which ADS like superpotentials are generated in N = 1gauge theories with adjoints, fundamentals, symmetric and antisymmetric chiral matter.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
