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arXiv 0710.3933hep-th
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不稳定真空热强场QED中的能量动量张量

Energy-momentum tensor in thermal strong-field QED with unstable vacuum

S. P. Gavrilov, D. M. Gitman

摘要:

计算了类电背景下热量子电动力学中从真空中产生粒子的单圈能量动量张量的平均值。这个问题基本上是从计算有效的行动(类似于海森堡-欧拉)的背景下,不违反真空的稳定性。研究了恒定电背景在破坏真空稳定性和粒子分布热特性中的作用。建立了对电场及其持续时间的限制,在此条件下可以忽略所产生粒子的反作用。

英文摘要:

The mean value of the one-loop energy-momentum tensor in thermal QED with electric-like background that creates particles from vacuum is calculated. The problem differes essentially from calculations of effective actions (similar to that of Heisenberg--Euler) in backgrounds that do not violate the stability of vacuum. The role of a constant electric background in the violation of both the stability of vacuum and the thermal character of particle distribution is investigated. Restrictions on the electric field and its duration under which one can neglect the back-reaction of created particles are established.

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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