High energy modular bootstrap, global symmetries and defects

High energy modular bootstrap, global symmetries and defects
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高能模块化自举、全局对称性和缺陷

DOI:
10.1007/jhep08(2020)064
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发表时间:
2020
影响因子:
5.4
通讯作者:
Zheng Sun
Zheng Sun
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Sridip Pal;Zheng Sun

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对于固定 δ 下的大 Δ,我们通过对状态数量设置上限和下限,在区间 [Δ − δ, Δ + δ] 内设置缩放维数的上限和下限,推导出存在拓扑缺陷线的情况下酉二维 CFT 不同扇区中算子增长的 Cardy 式公式。因此,我们证明,给定有限全局对称性 G(忠实地作用)下对称的任何酉模不变 2D CFT,G 的所有不可约表示都出现在未扭曲扇区的谱中;状态的增长是卡迪式的,并且与不可表达维度的“平方”成正比。在施瓦茨极限下,结果与体积规范理论的 JT 重力结果相匹配。如果对称性是非异常的,则结果适用于被群元素扭曲的任何扇区。对于 c > 1,这些陈述对于 Virasoro 初选均成立。此外,结果适用于大型 c CFT。我们还扩展了连续 U(1) 群的结果。
We derive Cardy-like formulas for the growth of operators in different sectors of unitary 2 dimensional CFT in the presence of topological defect lines by putting an upper and lower bound on the number of states with scaling dimension in the interval [∆ − δ, ∆ + δ] for large ∆ at fixed δ. Consequently we prove that given any unitary modular invariant 2D CFT symmetric under finite global symmetry G (acting faithfully), all the irreducible representations of G appear in the spectra of the untwisted sector; the growth of states is Cardy like and proportional to the “square” of the dimension of the irrep. In the Schwarzian limit, the result matches onto that of JT gravity with a bulk gauge theory. If the symmetry is non-anomalous, the result applies to any sector twisted by a group element. For c > 1, the statements are true for Virasoro primaries. Furthermore, the results are applicable to large c CFTs. We also extend our results for the continuous U(1) group.
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