### Abstract

We study the matter part of the algebra of open string fields using the 3-string vertex over the sliver state, which we call "comma vertex". By generalizing this comma vertex to the N-string overlap, we obtain a closed form of the Neumann coefficients in the N-string vertex and discuss its relation to the oscillator representation of wedge states.

Original language | English |
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Journal | Journal of High Energy Physics |

Volume | 5 |

Issue number | 9 |

Publication status | Published - 2001 |

### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

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## Cite this

Furuuchi, K., & Okuyama, K. (2001). Comma vertex and string field algebra.

*Journal of High Energy Physics*,*5*(9).