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arXiv 0904.4575hep-th
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修整因子与交叉方程

The Dressing Factor and Crossing Equations

Gleb Arutyunov, Sergey Frolov

摘要:

我们利用AdS_5 × S^5光锥弦论的世界片S矩阵的BES修整因子的DHM积分表示,通过交叉方程将修整因子的主支固定在快度环面上.所得到的结果被进一步使用,结合融合过程,以确定镜像理论的束缚态修整因子。我们令人信服地证明,以这种方式发现的镜像束缚态S-矩阵不依赖于在融合过程中采用的束缚态解决方案的内部结构。这个受欢迎的特性与弦论完全平行,在弦论中,相应的束缚态S矩阵也与束缚态组成粒子无关。我们发现的镜像束缚态S矩阵为建立AdS_5xS^5镜像理论的TBA方程提供了最后一个缺失的部分。

英文摘要:

We utilize the DHM integral representation for the BES dressing factor of the world-sheet S-matrix of the AdS_5xS^5 light-cone string theory, and the crossing equations to fix the principal branch of the dressing factor on the rapidity torus. The results obtained are further used, in conjunction with the fusion procedure, to determine the bound state dressing factor of the mirror theory. We convincingly demonstrate that the mirror bound state S-matrix found in this way does not depend on the internal structure of a bound state solution employed in the fusion procedure. This welcome feature is in perfect parallel to string theory, where the corresponding bound state S-matrix has no bearing on bound state constituent particles as well. The mirror bound state S-matrix we found provides the final missing piece in setting up the TBA equations for the AdS_5xS^5 mirror theory.

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