### 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 language | English |
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Pages (from-to) | 463-470 |

Number of pages | 8 |

Journal | Physics Letters B |

Volume | 353 |

Issue number | 4 |

DOIs | |

Publication status | Published - 6 Jul 1995 |

### Fingerprint

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Physics Letters B*,

*353*(4), 463-470. https://doi.org/10.1016/0370-2693(95)00612-O

**The string measure and spectral flow of critical N = 2 strings.** / Ketov, Sergei V.; Lechtenfeld, Olaf.

Research output: Contribution to journal › Article

*Physics Letters B*, vol. 353, no. 4, pp. 463-470. https://doi.org/10.1016/0370-2693(95)00612-O

}

TY - JOUR

T1 - The string measure and spectral flow of critical N = 2 strings

AU - Ketov, Sergei V.

AU - Lechtenfeld, Olaf

PY - 1995/7/6

Y1 - 1995/7/6

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0000565941&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000565941&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(95)00612-O

DO - 10.1016/0370-2693(95)00612-O

M3 - Article

VL - 353

SP - 463

EP - 470

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 4

ER -