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arXiv 0902.3198hep-th
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超出包装的Baxter方程

Baxter equation beyond wrapping

A. V. Belitsky

摘要:

迄今为止,在最大超对称杨-米尔斯理论中,描述威尔逊算子反常维数谱的类泰勒函数方程在包裹修正开始之前停止工作。本文将非多项式效应引入传递矩阵中,得到了一个改进的有限差分方程。这产生了一个自洽的渐近有限差分方程有效的任何阶的扰动理论。它的精确解的固定自旋和扭转在和超越包裹阶给出的结果与渐近Bethe Answer得到的一致。通过Luescher项修正渐近能量本征值,我们计算了一些短算子的反常维数。

英文摘要:

The Baxter-like functional equation encoding the spectrum of anomalous dimensions of Wilson operators in maximally supersymmetric Yang-Mills theory available to date ceases to work just before the onset of wrapping corrections. In this paper, we work out an improved finite-difference equation by incorporating nonpolynomial effects in the transfer matrix entering as its ingredient. This yields a self-consistent asymptotic finite-difference equation valid at any order of perturbation theory. Its exact solutions for fixed spins and twists at and beyond wrapping order give results coinciding with the ones obtained from the asymptotic Bethe Ansatz. Correcting the asymptotic energy eigenvalues by the Luescher term, we compute anomalous dimensions for a number of short operators beyond wrapping order.

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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