arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.16002hep-ph
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极高温度和密度下的QED等离子体

QED Plasma at Extremely High Temperature and Density

Samina Masood

摘要:

我们利用量子电动力学(QED)的重正化方法计算了理论的有效参数,表明在极高温度和极高密度下存在相对论性QED等离子体。高密度等离子体被发现内部的恒星核心和高温QED等离子体只能存在,在中微子退耦温度在早期宇宙,核合成完成之前。在热而稠密的介质中,辐射通过真空极化与介质耦合。通过计算介质中的真空极化张量,研究了在这种介质中辐射对物质的影响。我们显式计算QED等离子体的参数,如等离子体频率,德拜屏蔽长度和传播频率的温度和密度的超热和超密介质,分别。这一研究有助于理解超热超密系统中QED等离子体的短期存在性。

英文摘要:

We use the renormalization scheme of QED (Quantum Electrodynamics) in real-time formalism to calculate the effective parameters of the theory, indicating the existence of relativistic QED plasma at extremely high temperatures and extremely high densities. High-density plasma is found inside the stellar cores and high temperature QED plasma could only exist, right after the neutrino decoupling temperature in the early universe, before the nucleosynthesis is complete. Radiation couples with the medium through the vacuum polarization in a hot and dense medium. Calculating the vacuum polarization tensor in a medium, the effect of radiation on matter is investigated in such a medium. We explicitly compute the parameters of QED plasma such as plasma frequency, Debye shielding length and the propagation frequency in terms of temperature and density of the superhot and superdense medium, respectively. This study helps to understand short term existence of QED plasma in the superhot and superdense systems.

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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