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

Andrei Cheshel·Sergei V. Ketov
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Abstract

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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Andrei Cheshel, Sergei V. Ketov. 2002-09-07. IIA string instanton corrections to the four-fermion correlator in the intersection of Del Pezzo surfaces. https://doi.org/10.1103/physrevd.67.026007

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