Renormalization scheme of quantum electrodynamics (QED) at high temperatures is used to calculate the effective parameters of relativistic plasma in the early universe. Renormalization constants of QED play the role of effective parameters of the theory and can be used to determine the collective behavior of the medium. We explicitly show that the dielectric constant, magnetic reluctivity, Debye length and the plasma frequency depend on temperature in the early universe. Propagation speed (\(v_{prop}\)), refractive index (\(i_r\)), plasma frequency (\(\omega \)) and Debye shielding length (\(\lambda _D\)) of a QED plasma are computed at extremely high temperatures in the early universe. We also found the favorable conditions for the existence of relativistic plasma from these calculations.

中文翻译：

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早期宇宙中的QED等离子体

高温下的量子电动力学（QED）重归一化方案用于计算早期宇宙中相对论等离子体的有效参数。QED的重归一化常数充当该理论的有效参数，可用于确定介质的集体行为。我们明确表明介电常数，磁阻，德拜长度和等离子体频率取决于早期宇宙中的温度。传播速度（\（v_ {prop} \）），折射率（\（i_r \）），等离子频率（\（\ omega \））和德拜屏蔽长度（\（\ lambda _D \）QED等离子体的）是在早期宇宙中在极高的温度下计算的。从这些计算中，我们还发现了相对论性等离子体存在的有利条件。