Type IIA orientifolds and orbifolds on non-factorizable tori

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We investigate Type II orientifolds on non-factorizable torus with and without its oribifolding. We explicitly calculate the Ramond-Ramond tadpole from string one-loop amplitudes, and confirm that the consistent number of orientifold planes is directly derived from the Lefschetz fixed point theorem. We furthermore classify orientifolds on non-factorizable Z_N x Z_M orbifolds, and construct new supersymmetric Type IIA orientifold models on them.
42 pages, 3 figures, v2: typos corrected, references added, version to appear in Nucl. Phys. B

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High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/199909

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0712.2281
 http://arxiv.org/abs/0712.2281
 Nucl.Phys.B798:89-123,2008
 doi:10.1016/j.nuclphysb.2008.01.030

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