arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0908.0520hep-th
收藏

多圈Baxter方程的解析解

Analytic solution of the multiloop Baxter equation

M. Beccaria, A. V. Belitsky, A. V. Kotikov, S. Zieme

摘要:

最大超对称杨-米尔斯理论中规范不变算符的反常维数谱可以用长程可积自旋链模型来描述。我们的研究集中在它的$sl(2)$子扇区的twist-two单迹威尔逊运营商,这是共享的所有规范理论,超对称或不。我们发展了一种形式的解决方案的微扰多回路Baxter方程编码其异常尺寸,使用威尔逊多项式作为基函数和梅林变换技术。这些考虑产生紧凑的结果,允许分析计算的多回路异常尺寸绕过使用的最大超越性的原则。作为我们的方法的应用,我们分析确认已知的四回路的结果。我们还确定了五圈反常维数的修饰部分。

英文摘要:

The spectrum of anomalous dimensions of gauge-invariant operators in maximally supersymmetric Yang-Mills theory is believed to be described by a long-range integrable spin chain model. We focus in this study on its $sl(2)$ subsector spanned by the twist-two single-trace Wilson operators, which are shared by all gauge theories, supersymmetric or not. We develop a formalism for the solution of the perturbative multiloop Baxter equation encoding their anomalous dimensions, using Wilson polynomials as basis functions and Mellin transform technique. These considerations yield compact results which allow analytical calculations of multiloop anomalous dimensions bypassing the use of the principle of maximal transcendentality. As an application of our method we analytically confirm the known four-loop result. We also determine the dressing part of the five-loop anomalous dimensions.

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。

↑