Consistent off-shell tree string: Amplitudes

Authors
Liccardo, A Pezzella, F Marotta, R
Citation
A. Liccardo et al., Consistent off-shell tree string: Amplitudes, MOD PHY L A, 14(12), 1999, pp. 799-808
Citations number
24
Categorie Soggetti
Physics
Journal title
MODERN PHYSICS LETTERS A
ISSN journal
02177323 → ACNP
Volume
14
Issue
12
Year of publication
1999
Pages
799 - 808
Database
ISI
SICI code
0217-7323(19990420)14:12<799:COTSA>2.0.ZU;2-G
Abstract
We construct off-shell tree bosonic string amplitudes, based on the operato rial formalism of the N-string vertex, with three external massless states both for open and closed strings by requiring them to be projective invaria nt. In particular our prescription leads, in the low-energy limit, to the t hree-gluon amplitude in the usual covariant gauge.