Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-06-25
JHEP 0108:022,2001
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX2e file, 14 pages. Some signs corrected. Version published in JHEP
Scientific paper
10.1088/1126-6708/2001/08/022
We consider properties of a covariant worldvolume action for a system of N coincident Dp-branes in D=(p+2) dimensional space-time (so called codimension one branes). In the case of N coincident D0-branes in D=2 we then find a generalization of this action to a model which includes fermionic degrees of freedom and is invariant under target-space supersymmetry and worldline kappa-symmetry. We find that the type IIA D=2 superalgebra generating the supersymmetry transformations of the ND0-brane system acquires a non-trivial "central extension" due to a nonlinear contribution of U(N) adjoint scalar fields. Peculiarities of space-time symmetries of coincident Dp-branes are discussed.
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