Compactification and Supersymmetry Breaking in M-theory

Abstract

Keeping N=1 supersymmetry in 4-dimension and in the leading order, we disuss the various orbifold compactifications of M-theory suggested by Horava and Witten on $T^6/Z_3$, $T^6/Z_6$, $T^6/Z_{12}$, and the compactification by keeping singlets under $SU(2)\times U(1)$ symmetry, then the compactification on $S^1/Z_2$. We also discuss the next to leading order Kähler potential, superpotential, and gauge kinetic function in the $Z_{12}$ case. In addition, we calculate the SUSY breaking soft terms and find out that the universality of the scalar masses will be violated, but the violation might be very small.

16 pages, latex, no figures

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• Mildly sequestered supergravity models and their realization in string theory
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• Can we distinguish SUSY breaking terms between weakly and strongly coupled heterotic string theories ?