1107.4089 (V. D. Ivashchuk)
V. D. Ivashchuk
Partially supersymmetric intersecting (non-marginal) composite M-brane solutions defined on the product of Ricci-flat manifolds M_0 x M_1 x ... x M_n in D= 11 supergravity are considered and formulae for fractional numbers of unbroken supersymmetries are derived for the following configurations of branes: M2 - M2, M2 - M5, M5 - M5 and M2 - M2 - M2. Certain examples of partially supersymmetric configurations are presented.
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http://arxiv.org/abs/1107.4089
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