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arXiv 1208.1608hep-th
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大质量λ φ ^4模型的经典维数嬗变和重整化

Classical Dimensional Transmutation and Renormalization in Massive lambda phi^4 Model

Hiroshi Yoda, Shin'ichi Nojiri

摘要:

最近,Dvali、Gomez和Mukhanov研究了一个有外源无质量的经典λ φ ^4模型,他们阐明了在纯经典水平上存在潜在的重整化群结构,包括维度嬗变现象。特别是当耦合λ为负时,经典β函数表现出与QCD相同的渐近自由性质。本文研究了具有质量的λ φ ^4模型,阐明了质量的作用。得到的经典β函数与无质量λ φ ^[4]模型的β函数在红外截止与紫外截止之比的修正下是一致的,并且描述了与无质量理论相同的重整化流。我们还发现,有质量理论的动力学生成尺度比无质量理论的动力学生成尺度大,这可能是由于质量项的屏蔽效应。

英文摘要:

Recently, Dvali, Gomez, and Mukhanov have investigated a classical lambda phi^4 model with external source and without mass and they have clarified that there are underlying renormalization group structure, including the phenomenon of the dimensional transmutation, at purely classical level. Especially when the coupling lambda is negative, the classical beta function shows the property of asymptotic freedom as in QCD. In this paper, we investigate the lambda phi^4 model with mass, and clarify the role of the mass. The obtained classical beta function is identical with that of the massless lambda phi^4 model up to the corrections of the ratio of the IR cutoff to UV cutoff, and describes the renormalization flow same as the massless theory. We also found that the dynamically generated scale of massive theory is larger than that of massless theory, which could be due to the screening effect of the mass term.

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。

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