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arXiv 0706.4121hep-th
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长程psl(2)的解析Bethe Ancillary和Baxter方程|2)自旋链

Analytic Bethe Ansatz and Baxter equations for long-range psl(2|2) spin chain

A. V. Belitsky

摘要:

研究了极大超对称规范理论中伸缩算符的最大粒子数保持扇区。在使用psl(2)探索了底层自旋链的单循环Bethe Ansatze之后,|2)简单根系的对称性与几种Kac-Dynkin图有关,我们利用解析Bethe Anzats构造了具有有限维非典型表示的转移矩阵在辅助空间中的特征值。我们推导出封闭的Baxter方程的特征值嵌套巴克斯特运营商。我们将这些考虑扩展到所有阶的扰动理论在t Hooft耦合的FBBF分级的非杰出的根系统。构造了所有具有由Young超表(1 ^a)和(s)确定的辅助空间的转移矩阵的母函数,并找到了具有斜Young超表对应的辅助空间的转移矩阵的行列式公式.后者产生融合关系的转移矩阵与辅助空间对应的表示标记的平方杨supertableaux。本文导出了确定非紧psl(2)中复合Wilson算子反常维数谱的渐近Baxter方程|2)N=4超杨-米尔斯理论的子扇区。

英文摘要:

We study the largest particle-number-preserving sector of the dilatation operator in maximally supersymmetric gauge theory. After exploring one-loop Bethe Ansatze for the underlying spin chain with psl(2|2) symmetry for simple root systems related to several Kac-Dynkin diagrams, we use the analytic Bethe Anzats to construct eigenvalues of transfer matrices with finite-dimensional atypical representations in the auxiliary space. We derive closed Baxter equations for eigenvalues of nested Baxter operators. We extend these considerations for a non-distinguished root system with FBBF grading to all orders of perturbation theory in 't Hooft coupling. We construct generating functions for all transfer matrices with auxiliary space determined by Young supertableaux (1^a) and (s) and find determinant formulas for transfer matrices with auxiliary spaces corresponding to skew Young supertableaux. The latter yields fusion relations for transfer matrices with auxiliary space corresponding to representations labelled by square Young supertableaux. We derive asymptotic Baxter equations which determine spectra of anomalous dimensions of composite Wilson operators in noncompact psl(2|2) subsector of N=4 super-Yang-Mills theory.

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