关于$T \bar T$双迹变形和边界条件的评述
Comments on $T \bar T$ double trace deformations and boundary conditions
摘要：
我们研究了$μT \bar T$变形的共形场论的紫外动力学。我们探讨的问题，非微扰完成的$μ$扩展推导出一个积分表达式，使用傅立叶/勒让德变换技术，并表明，这是更自然的施加诺依曼，而不是狄利克雷，边界条件，度量在截止表面最近提出的麦高夫，Mezei和Verlinde。我们也评论有趣的连接到边界共形场论。
英文摘要：
We study the UV dynamics of $μT \bar T$ deformed conformal field theories formulated as a deformation of generating functions. We explore the issue of non-perturbative completion of the $μ$ expansion by deriving an integral expression using the Fourier/Legendre transform technique, and show that it is more natural to impose Neumann, as opposed to the Dirichlet, boundary condition, for the metric at the cut-off surface recently proposed by McGough, Mezei, and Verlinde. We also comment on interesting connection to boundary conformal field theories.
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