Non-linear realization of Poincare invariance in the graph-representation of extremal hypersurfaces
arXiv:0806.0656
Abstract
In the Born-Infeld 'harmonic gauge' description of M-branes moving in R^{M+1} the underlying M+2 dimensional Poincare - invariance gives rise to an interesting system of conservation laws showing signs of integrability.
3 pages