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arXiv 2302.09677hep-th
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$T\bar{T}$形变CFT中的S-对偶性

S-duality in $T\bar{T}$-deformed CFT

Nathan Benjamin, Scott Collier, Jorrit Kruthoff, Herman Verlinde, Mengyang Zhang

AI总结:

本文利用非临界弦对应计算了对称积CFT的$T\bar{T}$形变配分和,发现其理论具有自然的紫外完备化,并展现出交换动量与缠绕数、将耦合$λ$映射为$1/λ$的$\mathbb{Z}_2$强弱势对偶性,从而消除了强耦合下的复数能量。

摘要:

$T\bar{T}$形变共形场论可以重新表述为非临界弦的世界面理论。我们利用这一对应关系计算并研究了对称积CFT的$T\bar{T}$形变配分和。我们发现它具有二次量子化弦理论的配分和形式,其世界面由种子CFT与以二维环面为目标空间的高斯sigma模型二者的乘积给出。我们证明,形变对称积理论允许一种自然的紫外完备化,该完备化展现出一种强弱耦合$\mathbb{Z}_2$对偶性,它交换动量与缠绕数,并将$T\bar{T}$耦合$λ$映射为其倒数$1/λ$。该$\mathbb{Z}_2$对偶性是完整O$(2,2,\mathbb{Z})$对偶群的一部分,后者包含作用于复化$T\bar{T}$耦合上的PSL$(2,\mathbb{Z})$。对于所有中心荷$c\leq 6$的种子CFT,该对偶对称性消除了强耦合下复数能量的出现。

英文摘要:

$T\bar{T}$ deformed conformal field theories can be reformulated as worldsheet theories of non-critical strings. We use this correspondence to compute and study the $T\bar{T}$ deformed partition sum of a symmetric product CFT. We find that it takes the form of a partition sum of a second quantized string theory with a worldsheet given by the product of the seed CFT and a gaussian sigma model with the two-torus as target space. We show that deformed symmetric product theory admits a natural UV completion that exhibits a strong weak coupling $\mathbb{Z}_2$ duality that interchanges the momentum and winding numbers and maps the $T\bar{T}$-coupling $λ$ to its inverse $1/λ$. The $\mathbb{Z}_2$ duality is part of a full O$(2,2,\mathbb{Z})$-duality group that includes a PSL$(2,\mathbb{Z})$ acting on the complexified $T\bar{T}$ coupling. The duality symmetry eliminates the appearance of complex energies at strong coupling for all seed CFTs with central charge $c\leq 6$.

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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