Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-05-29
Phys.Lett. B441 (1998) 105-115
Physics
High Energy Physics
High Energy Physics - Theory
15pages, Latex, in v2 two references added and some grammatical and spelling errors corrected. in v3 the title is a bit modifi
Scientific paper
10.1016/S0370-2693(98)01177-0
We derive the spacetime superalgebras explicitly from ``test'' p-brane actions in a D-8-brane (i.e. a massive IIA) background to the lowest order in $\theta$ via canonical formalism, and show that the forms of the superalgebras are the same as those in all the other D-brane (i.e. massless IIA) backgrounds, that is, they are indifferent to the presence of the Chern-Simons terms which are proportional to the mass and added to the D-brane actions in the case of massive IIA backgrounds. Thus, we can say that all the D-brane background solutions including a D-8-brane are on equal footing from the viewpoint of the superalgebras via brane probes. We also deduce from the algebra all the previously known 1/4 supersymmetric intersections of a p-brane or a fundamental string with a D-8-brane, as the supersymmetric ``gauge fixings'' of the test branes in the D-8-brane background.
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