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arXiv 1102.1040hep-th
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量子折叠弦与可积性:从有限尺寸效应到小西维数

Quantum folded string and integrability: from finite size effects to Konishi dimension

Nikolay Gromov, Didina Serban, Igor Shenderovich, Dmytro Volin

摘要:

利用代数曲线方法,我们对AdS(5)xS(5)中IIB超弦的折叠弦解进行了单圈迭代.我们得到了一个明确的结果,适用于任意值的洛伦兹自旋S和R-电荷J的椭圆函数积分。然后考虑极限S ~ J ~ 1,导出了短算子强耦合展开式的前三个系数。值得注意的是,我们对小西态的反常维数的计算结果为2λ^{1/4}-4+2/λ^{1/4}。这正确地再现了arXiv:0906.4240中数值预测的值。此外,我们比较了我们的结果与一些新的数值数据从Y系统的另一个类似的状态。我们还重新审视了使用我们的方法的一些大S计算。特别是,我们得到有限大小的修正异常尺寸的运营商与小J在这个限制。

英文摘要:

Using the algebraic curve approach we one-loop quantize the folded string solution for the type IIB superstring in AdS(5)xS(5). We obtain an explicit result valid for arbitrary values of its Lorentz spin S and R-charge J in terms of integrals of elliptic functions. Then we consider the limit S ~ J ~ 1 and derive the leading three coefficients of strong coupling expansion of short operators. Notably, our result evaluated for the anomalous dimension of the Konishi state gives 2λ^{1/4}-4+2/λ^{1/4}. This reproduces correctly the values predicted numerically in arXiv:0906.4240. Furthermore we compare our result using some new numerical data from the Y-system for another similar state. We also revisited some of the large S computations using our methods. In particular, we derive finite--size corrections to the anomalous dimension of operators with small J in this limit.

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