D=4, N=1, Type IIA Orientifolds

Details D=4, N=1, Type IIA Orientifolds D=4, N=1, Type IIA Orientifolds

1999-08-03

arxiv.org/abs/hep-th/9908017v2

Phys.Rev. D60 (1999) 126005

Physics

High Energy Physics

High Energy Physics - Theory

32 pages, LaTeX

Scientific paper

10.1103/PhysRevD.60.126005

We study D=4, N=1, type IIA orientifold with orbifold group $Z_N$ and $Z_N \times Z_M$. We calculate one-loop vacuum amplitudes for Klein bottle, cylinder and Mobius strip and extract the tadpole divergences. We find that the tadpole cancellation conditions thus obtained are satisfied by the $Z_4$, $Z_8$, $Z'_8$, $Z'_{12}$ orientifolds while there is no solution for $Z_3$, $Z_7$, $Z_6$, $Z'_6$, $Z_{12}$. The $Z_4 \times Z_4$ type IIA orientifold is also constructed by introducing four different configurations of 6-branes. We argue about perturbative versus non-perturbative orientifold vacua under T- duality between the type IIA and the type IIB $Z_N$ orientifolds in four dimensions.

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