标题： 热标量场理论中的重求和 显示英文标题

标题： Resummation in a Hot Scalar Field Theory

摘要： 用于获得高温\(g^2\phi^4\)场论模型中的自能，直到$g^4$阶。 从这里计算有效传播子的零动量极点，以确定等离子体中玻色子的感应热质量与阻尼率，直到$g^3$阶。 计算是在虚时间形式下进行的，并使用简单的图分析来识别每个阶次的相关图。 结果与文献中找到的类似实时间计算进行了比较。 显示英文摘要

摘要： A resummed perturbative expansion is used to obtain the self-energy in the high-temperature \(g^2\phi^4\) field theory model up to order $g^4$. From this the zero momentum pole of the effective propagator is evaluated to determine the induced thermal mass and damping rate for the bosons in the plasma to order $g^3$. The calculations are performed in the imaginary time formalism and a simple diagrammatic analysis is used to identify the relevant diagrams at each order. Results are compared with similar real-time calculations found in the literature.