Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2003-12-09
Physics
High Energy Physics
High Energy Physics - Theory
12 pages, no figures, To appear in AzcarragaFest Proceedings: ``Symmetries in gravity and field theory. Conferencia homenaje e
Scientific paper
In this contribution we will review briefly the supersymmetric Lagrangian approach to the supergravity-superbrane interaction which was developed in collaboration with J. A. de Azcarraga, J.M. Izquierdo, J. Lukierski and J. M. Isidro. The main accent will be made on the pure gauge nature of the (super)brane coordinate functions in the presence of dynamical (super)gravity described by an action rather than as a fixed background. This pure gauge nature just reflects the fact that the coordinate functions are Goldstone fields corresponding to the spontaneously broken diffeomorphism gauge symmetry of the interacting system. Moreover, a brane does not carry any local degrees of freedom in such an interacting system. This fact related with fundamental properties of General Relativity (discussed already at 1916) can be treated as a peculiarity of the spacetime Higgs effect which occurs in General Relativity in the presence of material particles, strings and branes.
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