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arXiv 2202.12424hep-th
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对称orbifold中具有多圈场的四点函数和D1-D5 CFT

Four-point functions with multi-cycle fields in symmetric orbifolds and the D1-D5 CFT

Andre Alves Lima, G. M. Sotkov, M. Stanishkov

摘要:

我们研究了D1-D5连续傅里叶变换的自由轨道点上的具有两个一般多圈场和两个twist-2场的$S_N$不变四点函数.从对称群对复合多圈场的作用出发,导出了这些函数的显式因式分解。除了非平凡的对称因子,我们计算,与多圈运营商的功能减少到一个连接,其中的复合领域有,最多,两个周期的补充剂的总和。具有两个双圈场和两个单圈场的双振子在大- $N$极限下给出了首阶贡献。我们推导出明确的公式,这些功能,包括一个大类的选择单和双循环领域,包括通用的拉蒙基态,NS手征领域和边缘变形运营商。因此,我们能够提取重要的动力学信息,从短距离的OPEs:保形尺寸,R-电荷和结构常数的家庭的BPS和非BPS领域存在于相应的光-光和重-光通道。我们还讨论了一般的多周期$Q$ -点函数在$M^N/S_N$ orbifolds的性质,使用的技术,由于Pakman,Rastelli和Razamat。

英文摘要:

We study $S_N$-invariant four-point functions with two generic multi-cycle fields and two twist-2 fields, at the free orbifold point of the D1-D5 CFT. We derive the explicit factorization of these functions following from the action of the symmetric group on the composite multi-cycle fields. Apart from non-trivial symmetry factors that we compute, the function with multi-cycle operators is reduced to a sum of connected correlators in which the composite fields have, at most, two cycles. The correlators with two double-cycle and two single-cycle fields give the leading order contribution in the large-$N$ limit. We derive explicit formulas for these functions, encompassing a large class of choices for the single- and the double-cycle fields, including generic Ramond ground states, NS chiral fields and the marginal deformation operator. We are thus able to extract important dynamical information from the short-distance OPEs: conformal dimensions, R-charges and structure constants of families of BPS and non-BPS fields present in the corresponding light-light and heavy-light channels. We also discuss properties of generic multi-cycle $Q$-point functions in $M^N/S_N$ orbifolds, using a technology due to Pakman, Rastelli and Razamat.

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