title: Minimal basis for gauge theory amplitudes.
abstract: Identities based on monodromy for integrations in string theory are used to derive relations between different color-ordered tree-level amplitudes in both bosonic and supersymmetric string theory. These relations imply that the color-ordered tree-level n-point gauge theory amplitudes can be expanded in a minimal basis of (n-3)! amplitudes. This result holds for any choice of polarizations of the external states and in any number of dimensions.
authors.affiliation: Niels Bohr International Academy, The Niels Bohr Institute, Blegdamsvej 17, DK-2100, Copenhagen Ø, Denmark. bjbohr@nbi,dk
authors.forename: N E J
authors.initials: NE
authors.lastname: Bjerrum-Bohr
authors.forename: Poul H
authors.initials: PH
authors.lastname: Damgaard
authors.forename: Pierre
authors.initials: P
authors.lastname: Vanhove