Approximate solutions of exact renormalization group equations

Approximate solutions of exact renormalization group equations
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精确重正化群方程的近似解

DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
N. Tetradis
N. Tetradis
中科院分区：
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文献类型：
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作者：
D. Litim;N. Tetradis

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我们在有效平均作用的框架下研究了精确重整化群方程。我们给出了各种模型中势的尺度依赖性的解析近似解。这些解显示了丰富的物理行为谱，如控制二阶相变、临界指数、一阶相变（其中一些是辐射诱导的）和三临界行为的普遍行为的固定点。
We study exact renormalization group equations in the framework of the effective average action. We present analytical approximate solutions for the scale dependence of the potential in a variety of models. These solutions display a rich spectrum of physical behaviour such as fixed points governing the universal behaviour near second order phase transitions, critical exponents, first order transitions (some of which are radiatively induced) and tricritical behaviour.