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arXiv 2005.08560hep-th
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AdS $_3 \times S^3$中所有树级别4点关联函数的CFT $_6$原点

The CFT$_6$ origin of all tree-level 4-point correlators in AdS$_3 \times S^3$

Stefano Giusto, Rodolfo Russo, Alexander Tyukov, Congkao Wen

摘要:

我们提供了强有力的证据表明,所有的树级4点全息关联函数在AdS $_3 \times S^3$是由一个隐藏的6D共形对称约束。这个属性已经发现在AdS $_5 \times S^5$上下文中,并注意到在张量多重子部门的AdS $_3 \times S^3$理论。在这里,我们将其扩展到一般的AdS $_3 \times S^3$关联函数,其中还包含自旋为零和一,坐在重力多重态的手征初级运营商。关键的观察是,与这些运营商的6D共形初级领域是不是一个标量,但自对偶$3$形式的主要。作为一个例子,我们专注于关联函数涉及两个领域的张量多重态和两个重力多重态,并表明所有这样的关联函数编码在共形的6D相关器之间的两个标量和两个自对偶$3$ -形式,这是由三个功能的交比。通过与超引力显式计算中最简单的关联函数的结果比较,我们修正了这三个函数。

英文摘要:

We provide strong evidence that all tree-level 4-point holographic correlators in AdS$_3 \times S^3$ are constrained by a hidden 6D conformal symmetry. This property has been discovered in the AdS$_5 \times S^5$ context and noticed in the tensor multiplet subsector of the AdS$_3 \times S^3$ theory. Here we extend it to general AdS$_3 \times S^3$ correlators which contain also the chiral primary operators of spin zero and one that sit in the gravity multiplet. The key observation is that the 6D conformal primary field associated with these operators is not a scalar but a self-dual $3$-form primary. As an example, we focus on the correlators involving two fields in the tensor multiplets and two in the gravity multiplet and show that all such correlators are encoded in a conformal 6D correlator between two scalars and two self-dual $3$-forms, which is determined by three functions of the cross ratios. We fix these three functions by comparing with the results of the simplest correlators derived from an explicit supergravity calculation.

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