Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-04-10
JHEP 0808:096,2008
Physics
High Energy Physics
High Energy Physics - Theory
Minor corrections
Scientific paper
10.1088/1126-6708/2008/08/096
We find new supersymmetric four-dimensional Minkowski flux vacua of type II string theory on nilmanifolds and solvmanifolds. We extend the results of M. Grana, R. Minasian, M. Petrini, and A. Tomasiello to the case of intermediate SU(2) structures (the two internal supersymmetry parameters are neither parallel nor orthogonal). As pointed out recently by P. Koerber and D. Tsimpis, intermediate SU(2) structures are possible when one considers "mixed" orientifold projection conditions. To find our vacua, we rewrite these projection conditions in a more tractable way by introducing new variables: the projection basis. In these variables, the SUSY conditions become also much simpler to solve, and we find three new vacua. In addition, we find that these variables correspond to the SU(2) structure appearing with the dielectric pure spinors, objects introduced and discussed by R. Minasian, M. Petrini, A. Zaffaroni, and N. Halmagyi, A. Tomasiello, in the AdS/CFT context. Besides, our solutions provide some intuition on what a dynamical SU(3) x SU(3) structure solution could look like.
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