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arXiv 1708.06288hep-th
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关于${\cal N}=2^*$中高阶威尔逊圈的讨论

Comments on Higher Rank Wilson Loops in ${\cal N}=2^*$

James T. Liu, Leopoldo A. Pando Zayas, Shan Zhou

摘要:

对于具有$U(N)$规范群的${\cal N}=2^*$理论,我们计算了由具有$k$和$n$行的矩形Young表描述的威尔逊圈的期望值.评估减少到一个两个矩阵模型,我们解释,使用数值和分析技术相结合,在各种制度的参数$(N,λ,n,k)$,其中$λ$的特胡夫特耦合的本征值分布的一般性质。在大的$N$限制,我们提出了分析结果的领导和子领导的贡献。在只有一行或一列的特殊情况下,我们再现以前已知的结果的完全对称和完全反对称表示。本文还对${\cal N}=2^*$理论的${\cal N}=4$极限进行了广泛的讨论。在建立这些连接,我们澄清方面的各种订单的限制,以及如何放松他们,我们也发现它是有用的,明确地解决细节的属扩张。其结果是,对于完全对称的威尔逊回路,我们发现新的贡献,提高了在适当的制度在一个循环顺序与双全息计算的比较。

英文摘要:

For ${\cal N}=2^*$ theory with $U(N)$ gauge group we evaluate expectation values of Wilson loops in representations described by a rectangular Young tableau with $n$ rows and $k$ columns. The evaluation reduces to a two-matrix model and we explain, using a combination of numerical and analytical techniques, the general properties of the eigenvalue distributions in various regimes of parameters $(N,λ,n,k)$ where $λ$ is the 't Hooft coupling. In the large $N$ limit we present analytic results for the leading and sub-leading contributions. In the particular cases of only one row or one column we reproduce previously known results for the totally symmetry and totally antisymmetric representations. We also extensively discusss the ${\cal N}=4$ limit of the ${\cal N}=2^*$ theory. While establishing these connections we clarify aspects of various orders of limits and how to relax them; we also find it useful to explicitly address details of the genus expansion. As a result, for the totally symmetric Wilson loop we find new contributions that improve the comparison with the dual holographic computation at one loop order in the appropriate regime.

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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