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arXiv 1511.08025hep-thhep-ph
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光锥引导下的共形对撞机物理

Conformal Collider Physics from the Lightcone Bootstrap

Daliang Li, David Meltzer, David Poland

摘要:

我们解析地研究了包含全局对称电流和3d CFTS中应力张量的4点函数的共形自助方程的光锥极限。我们证明了应力张量对大自旋双扭态反常维数的贡献是负的当且仅当满足共形对撞机物理界。在AdS/CFT的上下文中,这些结果表明AdS引力的吸引力和CFT能量通量的正性之间的关系。我们还研究了非阿贝尔守恒流对双扭算符反常维数的贡献,对应于AdS中2粒子态的规范束缚能。我们表明,双扭态的表示确定的规范结合能的符号,当且仅当出现在当前的3点函数的系数满足类似的限制,这是相当于上界的电荷通量不对称的CFT。

英文摘要:

We analytically study the lightcone limit of the conformal bootstrap equations for 4-point functions containing global symmetry currents and the stress tensor in 3d CFTs. We show that the contribution of the stress tensor to the anomalous dimensions of large spin double-twist states is negative if and only if the conformal collider physics bounds are satisfied. In the context of AdS/CFT these results indicate a relation between the attractiveness of AdS gravity and positivity of the CFT energy flux. We also study the contribution of non-Abelian conserved currents to the anomalous dimensions of double-twist operators, corresponding to the gauge binding energy of 2-particle states in AdS. We show that the representation of the double-twist state determines the sign of the gauge binding energy if and only if the coefficient appearing in the current 3-point function satisfies a similar bound, which is equivalent to an upper bound on the charge flux asymmetry of the CFT.

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