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arXiv 2306.08031hep-th
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高能CFT数据的普适渐近行为

Universal Asymptotics for High Energy CFT Data

Nathan Benjamin, Jaeha Lee, Hirosi Ooguri, David Simmons-Duffin

AI总结:

该研究利用CFT的热有效作用量,分析态密度的次领头阶修正,提出热点思想预测高维亏格2曲面上的配分函数,提取重-重-重OPE系数及热1点函数的渐近行为。

摘要:

共形场论(CFT)的平衡有限温度可观测量可通过背景场的局域有效作用量——即“热有效作用量”——来描述。该有效作用量将CFT的态渐近密度确定为维度和自旋的精细函数。我们讨论了对该密度的次领头阶微扰与非微扰修正,并与自由例子和全息例子进行了比较。此外,我们展示了如何在被称为“热点”的特殊位置上,将热有效作用量应用于更复杂的几何结构。热点思想可预测特定高温极限下,亏格2黎曼曲面的高维版本上的CFT配分函数。通过将配分函数分解为一种新颖的高维亏格2共形块(我们在大标度维度下计算了该共形块),我们提取了高维CFT中重-重-重OPE系数的渐近密度。我们还使用相同技术计算了热1点函数的渐近行为。

英文摘要:

Equilibrium finite temperature observables of a CFT can be described by a local effective action for background fields -- a "thermal effective action." This effective action determines the asymptotic density of states of a CFT as a detailed function of dimension and spin. We discuss subleading perturbative and nonperturbative corrections to the density, comparing with free and holographic examples. We furthermore show how to use the thermal effective action on more complicated geometries at special locations called "hot spots." The hot spot idea makes a prediction for a CFT partition function on a higher-dimensional version of a genus-2 Riemann surface, in a particular high temperature limit. By decomposing the partition function into a novel higher-dimensional version of genus-2 conformal blocks (which we compute at large scaling dimension), we extract the asymptotic density of heavy-heavy-heavy OPE coefficients in a higher-dimensional CFT. We also compute asymptotics of thermal 1-point functions using the same techniques.

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