Abstract
We introduce a particular embedding of seven-dimensional self-duality membrane equations in C 3× R which breaks G 2 invariance down to SU(3). The world-volume membrane instantons define SU(3) special lagrangian submanifolds of C 3. We discuss in detail solutions for spherical and toroidal topologies assuming factorization of time. We show that the extra dimensions manifest themselves in the solutions through the appearance of a non-zero conserved charge which prevents the collapse of the membrane. We find non-collapsing rotating membrane instantons which contract from infinite size to a finite one and then they bounce to infinity in finite time. Their motion is periodic. These generalized complex Nahm equations, in the axially symmetric case, lead to extensions of the continuous Toda equation to complex space.
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