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arXiv 2212.04512hep-th
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由二维重力路径积分得到的$T\bar T + Λ_2$

$T\bar T + Λ_2$ from a 2d gravity path integral

Gonzalo Torroba

摘要:

我们发展了量子场论的$T \bar T + Λ_2$变形的二维重力路径积分公式。这提供了与de Sitter和平坦空间全息术相关的纯$T \bar T$变形的精确可解的一般化。路径积分揭示了弯曲空间中这些流的量子方面,最著名的是外尔异常,能量动量张量迹的算子关系,以及复合$T \bar T$算子的重整化。它也适用于这类能量流的哈格多恩和全息符号。我们提出了明确的计算再现以前的结果在文献中的环面和球的配分函数,现在在路径积分语言。最后,我们利用路径积分表示建立了一个具有三维引力的显式映射,并得到了平面空间全息的新预言。

英文摘要:

We develop a two-dimensional gravity path integral formulation of the $T \bar T + Λ_2$ deformation of quantum field theory. This provides an exactly solvable generalization of the pure $T \bar T$ deformation that is relevant for de Sitter and flat space holography. The path integral sheds light on quantum aspects of these flows in curved space, most notably the Weyl anomaly, the operator relation for the trace of the energy-momentum tensor, and the renormalization of the composite $T \bar T$ operator. It also applies to both the Hagedorn and the holographic signs of such flows. We present explicit calculations for the torus and sphere partition functions that reproduce previous results in the literature, now in path integral language. Finally, we use the path integral representation in order to establish an explicit map with 3d gravity, and obtain new predictions for flat space holography.

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。

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