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arXiv 1609.09820hep-th
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破缺电流反常维数、共形流形和RG流

Broken current anomalous dimensions, conformal manifolds and RG flows

Vladimir Bashmakov, Matteo Bertolini, Himanshu Raj

摘要:

我们考虑的变形的共形场论,明确打破一些全球对称性的理论。如果变形理论仍然是一个共形场论,人们可以利用共形对称性的约束来计算破缺电流的反常维数。我们考虑这种情况的几个实例,使用场论技术,也全息的,在必要的地方。场论方法足以讨论$d=4-ε$维中$O(N )$模型的破缺变形的例子。全息术是工具,而不是,用于计算当前的反常尺寸在$β$变形超共形场论,并在一类超对称RG流在大$N$。

英文摘要:

We consider deformations of a conformal field theory that explicitly break some global symmetries of the theory. If the deformed theory is still a conformal field theory, one can exploit the constraints put by conformal symmetry to compute broken currents anomalous dimensions. We consider several instances of this scenario, using field theory techniques and also holographic ones, where necessary. Field theoretical methods suffice to discuss examples of symmetry-breaking deformations of the $O(N )$ model in $d=4-ε$ dimensions. Holography is instrumental, instead, for computing current anomalous dimensions in $β$-deformed superconformal field theories, and in a class of supersymmetric RG flows at large $N$.

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