外磁场作用下Friedberg-Lee模型的退禁闭相变
Deconfinement Phase Transition with External Magnetic Field in Friedberg-Lee Model
摘要：
在Friedberg-Lee模型中研究了外加磁场作用下的解禁闭相变。在泛函重整化群的框架下，我们将常用于连续相变的势展开方法推广到模型中的一级相变。通过对流动方程的求解发现，磁场具有催化作用，在高温稠密介质中突破约束变得更加困难。
英文摘要：
The deconfinement phase transition with external magnetic field is investigated in the Friedberg-Lee model. In the frame of functional renormalization group, we extend the often used potential expansion method for continuous phase transitions to the first-order phase transition in the model. By solving the flow equations we find that, the magnetic field displays a catalysis effect and it becomes more difficult to break through the confinement in hot and dense medium.
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