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Classical stability of round and squashed seven-spheres in eleven-dimensional supergravity
Page, Don N
Four-dimensional field equations are derived for perturbations of the seven-sphere size and squashing parameter in eleven-dimensional supergravity configurations in which the rank-four tensor gauge field strength is proportional to the four-dimensional volume element. Field equations are also derived for perturbations in the size of a round or squashed Einstein-metric S 7 and in the magnitude of gauge-field-potential components proportional to an antisymmetric torsion tensor on these seven-spheres. The known anti—de Sitter—invariant solutions with round or squashed seven-spheres are shown to be classically stable to these perturbations.
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngPhysical Review DAmerican Physical Society (APS)http://www.deepdyve.com/lp/american-physical-society-aps/classical-stability-of-round-and-squashed-seven-spheres-in-eleven-83kZrGn4XG