标题： 热力学中的电弱相变 显示英文标题

标题： THERMODYNAMICS OF THE ELECTROWEAK PHASE TRANSITION

摘要： 我们讨论了标准模型在高温下的自由能的几个一般特性。 特别是，克拉珀龙方程被证明能够建立潜热与序参量跳跃之间的关系。 自由能是在重求和微扰理论中以两环阶计算为温度的函数。 提出了一种新的重求和程序，在该程序中对对称相和希格斯相的处理方式不同。 对于希格斯质量低于$\sim 70$GeV 的情况，实现了相变的定量描述。 结果发现与近期在大格点上的数值模拟结果一致。 相变没有为对称相中的强非微扰效应提供证据。 显示英文摘要

摘要： We discuss several general aspects of the free energy of the standard model at high temperatures. In particular the Clausius-Clapeyron equation is shown to yield a relation between the latent heat and the jump in the order parameter. The free energy is calculated as function of temperature in resummed perturbation theory to two-loop order. A new resummation procedure is proposed in which the symmetric phase and the Higgs phase are treated differently. A quantitative description of the phase transition is achieved for Higgs masses below $\sim 70$ GeV. The results are found to be in agreement with recent numerical simulations on large lattices. The phase transition provides no evidence for strong non-perturbative effects in the symmetric phase.