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arXiv 2212.14014hep-th
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$T\bar T$形变碳纤维薄膜的经典和量子对称性

Classical and quantum symmetries of $T\bar T$-deformed CFTs

Monica Guica, Ruben Monten, Ioannis Tsiares

摘要:

先前已经证明,$T\bar T$变形的CFTs在全量子水平上具有Virasoro $\times$ Virasoro对称性,其生成元通过简单地沿着$T\bar T$流传输原始CFT生成元来获得。在这篇文章中,我们显式地解决了相应的流方程在经典极限,获得了一个无限集的保守电荷,其作用在相空间是明确的,即使当理论是在一个紧凑的空间。场相关的坐标,是$T\bar T$变形的特性,从流中明确地出现。翻译的对称变换从规范的协变形式主义,我们发现,他们是不同的那些已经提出了在拉格朗日上下文中,但他们完全同意从全息得到的。我们还评论了不同的可能的基础上的对称性发电机和我们的显式经典的结果可以微扰扩展到量子水平。

英文摘要:

It has previously been proven that $T\bar T$ - deformed CFTs possess Virasoro $\times$ Virasoro symmetry at the full quantum level, whose generators are obtained by simply transporting the original CFT generators along the $T\bar T$ flow. In this article, we explicitly solve the corresponding flow equation in the classical limit, obtaining an infinite set of conserved charges whose action on phase space is well-defined even when the theory is on a compact space. The field-dependent coordinates that are characteristic of the $T\bar T$ deformation are shown to emerge unambiguously from the flow. Translating the symmetry transformations from the canonical to the covariant formalism, we find that they are different from those that have been previously proposed in the Lagrangian context, but that they agree precisely with those obtained from holography. We also comment on different possible bases for the symmetry generators and on how our explicit classical results could be extended perturbatively to the quantum level.

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