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D-instanton derivation of multi-fermion F-terms in supersymmetric QCD

We investigate effects of field theory instantons by considering D-instantons in a suitable D3-brane background. In supersymmetric QCD with SU(N_c) gauge group with N_f=N_c flavors, the moduli space of vacua is deformed by instantons. This effect can be described by the chiral interactions which are called multi-fermion F-terms. We derive these chiral interaction terms as D-instanton effects in the presence of D3-branes. For SU(2), the obtained result agrees with the previous result worked out by Beasley and Witten [hep-th/0409149]. We also explicitly work out those for the case of the symplectic gauge group, and show that they describe the deformation of the moduli space.

preprint2008arXivOpen access
Yoshinori MatsuoJaemo ParkCheol RyouMasayoshi Yamamoto
hep-th
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Yoshinori MatsuoJaemo ParkCheol RyouMasayoshi Yamamoto

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