arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.01224hep-thhep-phquant-ph
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实时形式的热场论:粒子衰变的概念和应用

Thermal Field Theory in real-time formalism: concepts and applications for particle decays

Torbjörn Lundberg, Roman Pasechnik

摘要:

这篇评论代表了一个详细和全面的讨论热场论(TFT)的概念和Yukawa型理论的关键结果。我们从一个一般的教学介绍到TFT的想象和实时制定。作为现象学相关的影响,我们提出了一个纲要的热衰变率计算的几个典型的反应的框架内的实时形式主义和比较的时间在文献中发现的结果。这里考虑的过程是中性(伪)标量衰变成两个不同的(伪)标量或费米子-反费米子对的过程。这些过程是从早期的作品,包括化学势和不同的物种在最终状态。此外,还讨论了费米子线的(赝)标量辐射。这些结果表明,在高温和高密度的系统中的许多唯象应用相关的粒子衰变观测的热效应的重要性。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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