arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.12904hep-th
收藏

高点共形块的降维

Dimensional reduction of higher-point conformal blocks

Sarah Hoback, Sarthak Parikh

摘要:

最近,在Parisi-Sourlas超对称性的帮助下,发现了一个有趣的关系,用d维CFT块的五项线性组合来表示(d-2)维CFT的四点标量共形块,具有常系数。我们将这种降维关系扩展到所有高点标量共形块的任意拓扑限制标量交换。我们表明,出现在有限项高点降维的常系数服从一个有趣的因式分解属性,使他们能够确定在某些图形费曼规则和相关的有限集的顶点和边缘因子。值得注意的是,这些规则可以完全通过考虑三个特定共形块的显式幂级数表示来确定:所谓的OPE/雪花拓扑的四点块,五点块和六点块。原则上,该方法也可以用于获得具有旋转交换的共形块的任意点降维。我们还展示了如何系统地扩展共形分波的降维关系到更高的点。

英文摘要:

Recently, with the help of Parisi-Sourlas supersymmetry an intriguing relation was found expressing the four-point scalar conformal block of a (d-2)-dimensional CFT in terms of a five-term linear combination of blocks of a d-dimensional CFT, with constant coefficients. We extend this dimensional reduction relation to all higher-point scalar conformal blocks of arbitrary topology restricted to scalar exchanges. We show that the constant coefficients appearing in the finite term higher-point dimensional reduction obey an interesting factorization property allowing them to be determined in terms of certain graphical Feynman-like rules and the associated finite set of vertex and edge factors. Notably, these rules can be fully determined by considering the explicit power-series representation of just three particular conformal blocks: the four-point block, the five-point block and the six-point block of the so-called OPE/snowflake topology. In principle, this method can be applied to obtain the arbitrary-point dimensional reduction of conformal blocks with spinning exchanges as well. We also show how to systematically extend the dimensional reduction relation of conformal partial waves to higher-points.

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。

↑