IIA string instanton corrections to the four-fermion correlator in the intersection of Del Pezzo surfaces

Andrei Cheshel (Kaiserslautern U.); Sergei V. Ketov (Tokyo Metropolitan U.)

IIA string instanton corrections to the four-fermion correlator in the intersection of Del Pezzo surfaces

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arxiv hep-th/0209063 v1 pith:GL5ONK5R submitted 2002-09-07 hep-th

IIA string instanton corrections to the four-fermion correlator in the intersection of Del Pezzo surfaces

Andrei Cheshel (Kaiserslautern U.) , Sergei V. Ketov (Tokyo Metropolitan U.) This is my paper

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keywords calabi-yaucorrectionscorrelatorfour-fermioninstantonintersectionpezzostring

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The Becker-Becker-Strominger formula, describing the string world-sheet instanton corrections to the four-fermion correlator in the Calabi-Yau compactified type-IIA superstrings, is calculated in the special case of the Calabi-Yau threefold realized in the intersection of two Del Pezzo surfaces. We also derive the selection rules in the supersymmetric GUT of the Pati-Salam type associated with our construction.

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