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arXiv 1408.2680hep-th
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sine-Gordon模型的渐近安全性

Asymptotic safety in the sine-Gordon model

J. Kovacs, S. Nagy, K. Sailer

摘要:

在泛函重整化群方法的框架下,证明了二维sine-Gordon模型的相结构存在一个非平凡的UV不动点,该不动点使得模型是渐近安全的.该固定点表现出强烈的奇异性,类似于在红外固定点附近发现的缩放。奇异性信号的能量尺度上限的有效性模型。我们认为具有动量相关波函数重整化的sine-Gordon模型与大质量sine-Gordon模型是对偶关系。

英文摘要:

In the framework of the functional renormalization group method it is shown that the phase structure of the 2-dimensional sine-Gordon model possesses a nontrivial UV fixed point which makes the model asymptotically safe. The fixed point exhibits strong singularity similarly to the scaling found in the vicinity of the infrared fixed point. The singularity signals the upper energy-scale limit to the validity of the model. We argue that the sine-Gordon model with a momentum-dependent wavefunction renormalization is in a dual connection with the massive sine-Gordon model.

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