标题： 一阶相变的泛函重整化群方法 显示英文标题

标题： First order phase transition with functional renormalization group method

摘要： 重整化群方法，更具体地说是Wegner-Houghton方程，用于在具有多项式势的简单标量场理论中寻找一阶相变。 对运行参数的改进定义使我们能够探索重整化群流至红外终点，并确定相变。 除了预期的一阶转变外，进一步的辐射修正产生了第一和第二阶相变。 通过该理论的格点规范版本的蒙特卡罗模拟来回顾相图，但收敛的严重缓慢使得无法从模拟中获得明确的结果。 显示英文摘要

摘要： The renormalization group method, more specifically the Wegner-Houghton equation, is used to find first order phase transitions in a simple scalar field theory with a polynomial potential. An improved definition of the running parameters allows us to explore the renormalization group flow down to the IR end point and to locate phase transitions. Beyond the expected first order transition further radiative correction generated first and second order transitions are found. The phase diagram is reviewed by a Monte-Carlo simulation of the lattice regulated version of the theory but the serious slow down of the convergence prevents us to obtain conclusive results from the simulation.