Deformations of M-theory Killing superalgebras
arXiv:0706.2600 · doi:10.1088/0264-9381/24/20/020
Abstract
We classify the Lie superalgebra deformations of the Killing superalgebras of some M-theory backgrounds. We show that the Killing superalgebras of the Minkowski, Freund--Rubin and M5-brane backgrounds are rigid, whereas the ones for the M-wave, the Kaluza--Klein monopole and the M2-brane admit deformations, which we give explicitly.
20 pages (v3: a number of signs and a couple of factors have changed without affecting the result. v4: yet more sign changes, but results remain unchanged. v5: this is becoming absurd... but the signs ought to be correct now! v6: no more sign changes, but section 5.2 on the MKK monopole has been partially rewritten and some relevant references have been added.)
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