Yang-Baxter $sigma$-models, conformal twists & noncommutative Yang-Mills

Yang-Baxter $sigma$-models, conformal twists & noncommutative Yang-Mills
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Yang-Baxter $sigma$-模型,保角扭曲

DOI:
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发表时间:
2017
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通讯作者:
Kentaroh Yoshida
Kentaroh Yoshida
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作者:
T. Araujo;I. Bakhmatov;E. Colgáin;J. Sakamoto;M. Sheikh;Kentaroh Yoshida

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Yang-Baxter $sigma$-模型是一种生成 AdS$_5imes$S$^5$ 可积变形的系统方法。我们重新构建了开弦所看到的变形,其中度量是未变形的 AdS$_5 imes$S$^5$,具有恒定的弦耦合,并且有关变形的所有信息都编码在非交换 (NC) 参数 $Theta$ 中。我们将 AdS$_5$ 的变形识别为共形代数的扭曲,从而解释了非交换性。我们证明了超引力解的 $r$ 矩阵上的单模条件转化为 $Theta$ 是无散度的。单模 $r$ 矩阵的 $sigma$ 模型的可积性意味着对偶 NC 规范理论的存在和平面可积性。
The Yang-Baxter $sigma$-model is a systematic way to generate integrable deformations of AdS$_5 imes$S$^5$. We recast the deformations as seen by open strings, where the metric is undeformed AdS$_5 imes$S$^5$ with constant string coupling, and all information about the deformation is encoded in the noncommutative (NC) parameter $Theta$. We identify the deformations of AdS$_5$ as twists of the conformal algebra, thus explaining the noncommutativity. We show that the unimodularity conditon on $r$-matrices for supergravity solutions translates into $Theta$ being divergence-free. Integrability of the $sigma$-model for unimodular $r$-matrices implies the existence and planar integrability of the dual NC gauge theory.