论文标题
实时形式主义中的热场理论：粒子衰变的概念和应用
Thermal Field Theory in real-time formalism: concepts and applications for particle decays
论文作者
论文摘要
这篇综述代表了Yukawa型理论中热场理论（TFT）概念（TFT）概念的详细而全面的讨论。我们从虚构和实时配方中的TFT中进行了一般的教学介绍。作为与现象学相关的含义，我们提出了在实时形式主义框架内计算出的几种典型反应的热衰减率的汇编，并将其与文献中发现的假想时间结果进行了比较。此处考虑的过程是中性（伪）标量衰减成两个不同（伪）标量的过程，或分为Fermion-Antifermion对。这些过程从较早的作品扩展到包括化学潜力和最终状态下的不同物种。此外，还讨论了fermion系的（伪）标量发射。这些结果证明了热效应在高温和密度下在系统中许多现象学应用中相关的颗粒衰减中的重要性。
This review represents a detailed and comprehensive discussion of the Thermal Field Theory (TFT) concepts and key results in Yukawa-type theories. We start with a general pedagogical introduction into the TFT in the imaginary- and real-time formulation. As phenomenologically relevant implications, we present a compendium of thermal decay rates for several typical reactions calculated within the framework of the real-time formalism and compared to the imaginary-time results found in the literature. Processes considered here are those of a neutral (pseudo)scalar decaying into two distinct (pseudo)scalars or into a fermion-antifermion pair. These processes are extended from earlier works to include chemical potentials and distinct species in the final state. In addition, a (pseudo)scalar emission off a fermion line is also discussed. These results demonstrate the importance of thermal effects in particle decay observables relevant in many phenomenological applications in systems at high temperatures and densities.
