Consistent off-shell tree string amplitudes

We construct off-shell tree bosonic string amplitudes, based on the operatorial formalism of the N-string vertex, with three external massless states both for open and closed strings by requiring them to be projective invariant. In particular our prescription leads, in the low-energy limit, to the t...

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Autori principali: Liccardo, A, Pezzella, F, Marotta, R
Natura: Journal article
Lingua:English
Pubblicazione: 1999

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