N-Superstring vertex and the vertex operator for the emission of the superstring

Ursula Carow-Watamura, Satoshi Watamura

Research output: Contribution to journalArticlepeer-review


The BRST invariant, supersymmetric N-string vertex which applies to both, the Neveu-Schwarz and Ramond sector of the superstring is formulated using the vertex operator for the emission of a superstring. It is shown that the N-superstring vertex thus obtained is cyclic symmetric when GSO projected on-shell states and operators for the external strings are applied. The constraint equations of this vertex and their singularity structure are examined and we show that this vertex also has the required property of a transition operator. We also give a proof of its BRST invariance and supersymmetry.

Original languageEnglish
Pages (from-to)149-161
Number of pages13
JournalNuclear Physics, Section B
Issue number1
Publication statusPublished - 1988 Oct 10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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