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arXiv 2408.09402hep-phphysics.plasm-ph
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时空非均匀电场中电子-正电子对产生的跃迁特征

Transition signatures for electron-positron pair creation in space-time inhomogeneous electric field

C. K. Li, X. X. Zhou, Q. Chen, B. An, Y. J. Li, N. S. Lin, Y. Wan

AI总结:

本研究通过计算量子场论分析时空非均匀电场中的电子-正电子对产生,发现并解释了不对称跃迁通道源于激光空间非均匀性,且该通道能显著增强对产生效率。

摘要:

利用计算量子场论分析了在时空依赖电场中通过多光子吸收产生电子-正电子对的过程。我们的研究揭示了两种不同的对产生通道:对称跃迁通道和不对称跃迁通道。我们提出,不对称跃迁通道源于强激光脉冲固有的空间非均匀性。通过将激光辅助多光子对产生的场论模型映射到量子力学含时框架中,推导出一个半解析解,该解捕捉了真空衰变的不对称跃迁特征。此外,研究证明,忽略空间非均匀性会导致错误的跃迁振幅和对产生通道的错误识别。进一步地,我们确定不对称跃迁通道在给定激光脉冲能量下显著增强电子-正电子对的产生。

英文摘要:

The process of electron-positron pair creation through multi-photon absorption in a space-time dependent electric field is analyzed using computational quantum field theory. Our findings reveal two distinct pair creation channels: the symmetric and asymmetric transition channels. We propose that the asymmetric transition channel arises from the inherent spatial inhomogeneity of intense laser pulses. By mapping the field-theoretical model of laser-assisted multi-photon pair creation onto a quantum-mechanical time-dependent framework, a semi-analytical solution that captures the asymmetric transition signatures of vacuum decay is derived. Additionally, it is demonstrated that neglecting spatial inhomogeneity leads to erroneous transition amplitudes and incorrect identification of pair creation channels. Furthermore, we have established that asymmetric transition channels substantially enhance the creation of electron-positron pairs for a given laser pulse energy.

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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