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arXiv 2202.05575hep-th
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多重$Dp$ -膜上的Witten立方开弦场论

Witten's Cubic Open String Field Theory on multiple $Dp$-branes

Taejin Lee

摘要:

本文研究了多重$Dp$ -膜上的Witten三次开弦场论。在多个$Dp$ -膜上,字符串字段携带$U(N)$群索引。将弦的世界单映射到上半复平面上,通过计算Witten三次开弦的Polyakov弦路径积分,得到了一、二、三线顶点算子的Fock空间表示.在低能区,系统由无质量规范场和无质量标量场描述,并带有$U(N)$群指数。双弦顶点诱导了规范场和标量场的质量项。在$(p+1)$维空间上,立方相互作用正确地约化为非阿贝尔规范场的立方项、规范场的立方相互作用项和标量场的立方相互作用项。因此,Witten的弦场论可能是研究多重$Dp$ -膜上开弦的量子动力学的有用工具。

英文摘要:

We study Witten's cubic open string field theory on multiple $Dp$-branes. On multiple $Dp$-branes the string fields carry $U(N)$ group indices. Mapping the string world-sheet onto the upper half complex plane and evaluating the Polyakov string path integral of Witten's cubic open string, we obtain a Fock space representation of one, two and three-string vertex operators. In the low energy region, the system is described by massless gauge fields and massless scalar fields, carrying $U(N)$ group indices. The two-string vertex induces mass terms for the gauge fields and the scalar fields. The cubic interaction reduces correctly to the cubic term of the non-Abelian gauge fields, cubic interaction terms of the gauge fields, and the scalar fields on $(p+1)$ dimensional space. Thus, Witten's string field theory may be a useful tool to study the quantum dynamics of open strings on multiple $Dp$-branes.

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