We clarify RR tadpole cancellation conditions for intersecting D4-/D5-branes. We determine all of the D4-brane models that have D = 4 three-generation chiral fermions with SU(3) x SU(2) x U(1)(n) symmetries. For the D5-brane case, we present a solution to the conditions that gives exactly the matter content of the standard model with U(1) anomalies.
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Inst Balseiro, CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, ArgentinaInst Balseiro, CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
Aldazabal, G
Franco, S
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机构:Inst Balseiro, CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
Franco, S
Ibáñez, LE
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机构:Inst Balseiro, CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
Ibáñez, LE
Rabadán, R
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Rabadán, R
Uranga, AM
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