arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 0908.2463hep-th
收藏

ABJM和ABJ模型中磁振子的四圈色散

Magnon dispersion to four loops in the ABJM and ABJ models

J. A. Minahan, O. Ohlsson Sax, C. Sieg

摘要:

ABJM模型是一个超共形的陈-西蒙斯理论,具有N=6的超对称性,被认为在平面极限下是可积的。然而,在磁振子色散关系中出现了一个耦合依赖函数,而渐近Bethe近似只在强耦合和弱耦合时才知道。我们计算这个函数的四个循环微扰理论的显式费曼图计算的ABJM模型和ABJ扩展。我们发现所有的系数都具有极大的超越性。然后,我们计算了SU(4)的20中标量算子的四圈包裹校正,发现它与Gromov,Kazakov和Vieira的ABJM Y系统的最近预测一致。我们还提出了一个限制的ABJ模型,可能是微扰可积在所有的循环订单,但有一个短程哈密顿。

英文摘要:

The ABJM model is a superconformal Chern-Simons theory with N=6 supersymmetry which is believed to be integrable in the planar limit. However, there is a coupling dependent function that appears in the magnon dispersion relation and the asymptotic Bethe ansatz that is only known to leading order at strong and weak coupling. We compute this function to four loops in perturbation theory by an explicit Feynman diagram calculation for both the ABJM model and the ABJ extension. We find that all coefficients have maximal transcendentality. We then compute the four-loop wrapping correction for a scalar operator in the 20 of SU(4) and find that it agrees with a recent prediction from the ABJM Y-system of Gromov, Kazakov and Vieira. We also propose a limit of the ABJ model that might be perturbatively integrable at all loop orders but has a short range Hamiltonian.

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。

↑