Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-06-12
Phys.Lett.B517:397-405,2001
Physics
High Energy Physics
High Energy Physics - Theory
Latex 14 pages, v2: references added. v3: pages reduced contents added, v4=v3(emailer error), v5=to appear in PLB
Scientific paper
10.1016/S0370-2693(01)01037-1
We describe orientifold operation defining O3 plane in the conifold background by deriving it from that of O4 plane in the Type IIA brane construction by T-duality. We find that both $O3^+$ and $O3^-$ are at the tip of the cone so that there is no net untwisted RR charge. RG analysis shows that we need two `fractional' branes for the conformal invariance in orientifolded conifold. We argue that the gravity solution is the same as Klebanov and Tsyetlin since SUGRA cannot distinguish the orientifolds and D branes in this case. We describe the duality cascade as well as the quantum deformation of the moduli space of the field theory in the presence of the orientifold. The finitely resolved conifold does not allow the orientifold, while deformed conifold leaves us an unresolved issue on supersymmetry.
Ahn Changhyun
Nam Soonkeon
Sin Sang-jin
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