Superalgebras from D-brane actions

Abstract

The Noether charge algebras of D-brane actions contain two anomalous terms which modify the standard supertranslation algebra. We use a cocycle approach to derive associated spectra of topological charge algebras. The formalism is applied to $(p,q)$-strings and the D-membrane. The resulting spectra contain known algebras which allow the construction of extended superspace actions.