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arXiv 1701.06154hep-th
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立方开弦场论的变形

Deformation of the Cubic Open String Field Theory

Taejin Lee

摘要:

我们研究了立方开玻色弦论的一致变形,使得微扰弦论的非平面世界片图映射到光锥弦场论的等价平面图上,其中的一些长度参数是固定的。在零斜率极限下对三次弦顶点的显式计算得出弦耦合常数和杨-米尔斯耦合常数之间的正确关系。变形立方开弦场论被证明在零斜率极限下产生非阿贝尔杨-米尔斯作用,如果它被定义在多个D-膜上。将一致变形系统地应用于多弦世界片图,我们可以计算任意数目的外部开弦的散射振幅。

英文摘要:

We study a consistent deformation of the cubic open bosonic string theory in such a way that the non-planar world sheet diagrams of the perturbative string theory are mapped onto their equivalent planar diagrams of the light-cone string field theory with some length parameters fixed. An explicit evaluation of the cubic string vertex in the zero-slope limit yields the correct relationship between the string coupling constant and the Yang-Mills coupling constant. The deformed cubic open string field theory is shown to produce the non-Abelian Yang-Mills action in the zero-slope limit if it is defined on multiple D-branes. Applying the consistent deformation systematically to multi-string world sheet diagrams, we may be able to calculate scattering amplitudes with an arbitrary number of external open strings.

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