The string measure and spectral flow of critical N = 2 strings

Sergei V. Ketov, Olaf Lechtenfeld

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Abstract

The general structure of N = 2 moduli space at arbitrary genus and instanton number is investigated. The N = 2 NSR string measure is calculated, yielding picture- and U(1) ghost number-changing operator insertions. An explicit formula for the spectral flow operator acting on vertex operators is given, and its effect on N = 2 string amplitudes is discussed.

Original languageEnglish
Pages (from-to)463-470
Number of pages8
JournalPhysics Letters B
Volume353
Issue number4
DOIs
Publication statusPublished - 6 Jul 1995

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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