arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.09006hep-th
收藏

来自受保护算符的RG流约束

Constraints on RG Flows from Protected Operators

Florent Baume, Alessio Miscioscia, Elli Pomoni

AI总结:

该研究针对共形场论中紫外与红外不动点处的受保护算符,推导了其两点函数系数差的求和规则,可计算Type-B反常系数差并论证其正性,还在多种理论中验证结果、推广至流与应力张量。

摘要:

我们研究了在紫外和红外不动点处具有相同共形维数的受保护算符。我们推导了这些算符在紫外与红外不动点处两点函数系数之差的求和规则,该规则依赖于标量算符的两点函数。在偶数维共形场论中,共形维数恰为整数的标量算符与Type-B共形反常相关联。在这类情形下,该求和规则可计算Type-B反常系数之间的差值。我们论证了当共形流形包含弱耦合理论时,这一差值为正。我们在自由理论以及$\boldsymbol{\n = 2}$超共形QCD、项链箭图和全息RG流中验证了这些结果。我们还进一步推导了流和应力张量两点函数的求和规则。

英文摘要:

We consider protected operators with the same conformal dimensions in the ultraviolet and infrared fixed point. We derive a sum rule for the difference between the two-point function coefficient of these operators in the ultraviolet and infrared fixed point which depends on the two-point function of the scalar operator. In even dimensional conformal field theories, scalar operators with exactly integer conformal dimensions are associated with Type-B conformal anomalies. The sum rule, in these cases, computes differences between Type-B anomaly coefficients. We argue the positivity of this difference in cases in which the conformal manifold contains weakly coupled theories. The results are tested in free theories as well as in $\mathcal N = 2$ superconformal QCD, necklace quivers and holographic RG flows. We further derive sum rules for currents and stress tensor two-point functions.

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。

↑