Properties of the three-reggeon vertex in string theories (original) (raw)

Nuclear Physics B, 1987

Abstract

We construct in a very simple way a three-reggeon vertex that includes also the contribution of the ghost coordinates, both for the bosonic and fermionic string. We show its connection with the vertex operators that are usually used to construct dual amplitudes and with the light-cone three-string vertex. Finally, we prove its invariance under BRST transformations.

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