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arXiv 1506.03388hep-th
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尖点反常维数的复活

The Resurgence of the Cusp Anomalous Dimension

Inês Aniceto

摘要:

这项工作解决了从积分Beisert-Eden-Staudacher(BES)方程获得的尖点异常维度强耦合展开的复兴性质。这种膨胀是阶乘发散的,它的第一个非微扰修正与$O(6)$ $σ$模型的质量间隙有关。因子差异也可以从复苏的角度进行分析。基于Basso和Korchemsky的工作,提出了一个尖点异常维数的transseries anomaly,并研究了相应的预期高阶行为。人们发现在正负实耦合方向上都存在非微扰现象,这需要包括在BES方程的解析条件中。检查后的复苏结构的建议transseries,它表明,它自然会导致一个明确的remation过程,此外,允许强/弱耦合插值。

英文摘要:

This work addresses the resurgent properties of the cusp anomalous dimension's strong coupling expansion, obtained from the integral Beisert-Eden-Staudacher (BES) equation. This expansion is factorially divergent, and its first nonperturbative corrections are related to the mass gap of the $O(6)$ $σ$-model. The factorial divergence can also be analysed from a resurgence perspective. Building on the work of Basso and Korchemsky, a transseries ansatz for the cusp anomalous dimension is proposed and the corresponding expected large-order behaviour studied. One finds non-perturbative phenomena in both the positive and negative real coupling directions, which need to be included to address the analyticity conditions coming from the BES equation. After checking the resurgence structure of the proposed transseries, it is shown that it naturally leads to an unambiguous resummation procedure, furthermore allowing for a strong/weak coupling interpolation.

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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