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arXiv 0808.0458hep-th
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次临界串和大N QCD

Subcritical String and Large N QCD

Charles B. Thorn

摘要:

我们追求的可能性,使用亚临界弦论在4个时空维建立一个弦对偶大N QCD。特别是,我们研究了4维Neveu-Schwarz对偶共振模型的偶G宇称扇区作为这个弦论的自然候选者。我们的观点是,由这个模型给出的开弦动力学将{ \it决定}适当的亚临界闭合弦论,其树水平的背景应该描述平面多圈开弦图的总和。我们研究了一个循环的开弦图,其中包含的信息,在弱耦合的闭弦谱。更高的环开弦图将需要确定闭弦相互作用。我们还分析了单圈开弦图的场论极限,恢复了极限规范理论的正确运行耦合行为。

英文摘要:

We pursue the possibility of using subcritical string theory in 4 space-time dimensions to establish a string dual for large N QCD. In particular we study the even G-parity sector of the 4 dimensional Neveu-Schwarz dual resonance model as the natural candidate for this string theory. Our point of view is that the open string dynamics given by this model will {\it determine} the appropriate subcritical closed string theory, a tree level background of which should describe the sum of planar multi-loop open string diagrams. We examine the one loop open string diagram, which contains information about the closed string spectrum at weak coupling. Higher loop open string diagrams will be needed to determine closed string interactions. We also analyze the field theory limit of the one loop open string diagram and recover the correct running coupling behavior of the limiting gauge theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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