Gluon scattering amplitudes from gauge/string duality and integrability
Gluon scattering amplitudes from gauge/string duality and integrability
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来自规范/弦二元性和可积性的胶子散射振幅
DOI：
10.1142/s2010194513009379
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Yuji Satoh
中科院分区：
文献类型：
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作者：
Takashi Yoshida;Shinpei Okita;Hideyuki Umeda;K. Kanazawa and Y. Koike;森川雅博;Hitoshi Murayama;隅野行成;二間瀬敏史;Y. Sumino;森川雅博;Yuji Satoh
基于规范/弦对偶性及其潜在的可积性，讨论了强耦合下超Yang-Mills理论的胶子散射振幅/零多边形Wilson环。我们重点研究了AdS3中最小表面对应的振幅/Wilson环，它们由齐次正弦-戈登模型的热力学Bethe ansatz方程描述。利用共形摄动理论和g函数（边界熵）与t函数之间的有趣关系，我们推导出了威尔逊环成为正多边形的极限附近的解析展开式。我们还将我们的分析结果与两个循环的分析结果进行了比较，发现对于所有多点振幅，重新缩放的剩余函数彼此接近。
We discuss gluon scattering amplitudes/null-polygonal Wilson loops ofsuper Yang-Mills theory at strong coupling based on the gauge/string duality and its underlying integrability. We focus on the amplitudes/Wilson loops corresponding to the minimal surfaces in AdS3, which are described by the thermodynamic Bethe ansatz equations of the homogeneous sine-Gordon model. Using conformal perturbation theory and an interesting relation between the g-function (boundary entropy) and the T-function, we derive analytic expansions around the limit where the Wilson loops become regular-polygonal. We also compare our analytic results with those at two loops, to find that the rescaled remainder functions are close to each other for all multi-point amplitudes.