Feynman-like rules for bosonic strings; Tree vertices, b-ghost insertion and factorization

U. Carow-Watamura, Z. F. Ezawa, S. Watamura

研究成果: Article査読

13 被引用数 (Scopus)

抄録

Feynman-like rules for constructing string vertices are formulated in the operator formalism in such a way that the underlyinh geometrical picture becomes manifest. Using Olive's as well as Lovelace's parametrization for the matter part we complete Feynman-like rules by including the ghost fields. The twisted propagator is defined with a b-ghost insertion together with a contour integration, in order to take the measure properly into account. The measure part of the string vertex is analyzed in detail. We formulate the BRST-invariant N-string tree vertex which enjoys the exact factorization property.

本文言語English
ページ(範囲)187-210
ページ数24
ジャーナルNuclear Physics, Section B
319
1
DOI
出版ステータスPublished - 1989 6 5

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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