由laser脉冲训练产生三叉戟对：谐振、阈值和载波包络相位效应
Trident pair creation by a train of laser pulses: Resonance, threshold, and carrier envelope phase effects
摘要：
强场量子电动力学领域的一般配方提供了一个过程中发生的激光脉冲的训练的存在下，在树的水平，是由一个两顶点费曼图与交换的虚光子。检索相应的概率分布中的共振的方案也制定在这些一般设置。虽然所提出的形式主义适用于各种过程，如电子-正电子对的产生和湮灭、穆勒散射、巴巴散射等，我们用三叉戟过程来说明它。具体来说，我们考虑电子-正电子对创建的μ子-激光场碰撞。我们证明了概率分布表现出可积奇点接近对创建的阈值。此外，观察到各种共振，起源于费曼光子传播的极点。虽然这些共振，在一般情况下，模糊的强量子干涉，我们表明，它们可以通过改变驱动激光脉冲的载波包络相位隔离。在这种情况下，当变换成洛伦兹-布赖特-维格纳形状轮廓时，可以确定谐振位置和宽度。
英文摘要：
General formulation in the realm of strong-field quantum electrodynamics is provided for a process that occurs in the presence of a train of laser pulses and, in the tree level, is represented by a two-vertex Feynman diagram with exchange of a virtual photon. A scheme of retrieving resonances in the corresponding probability distributions is also formulated in these general settings. While the presented formalism is applicable to a variety of processes like electron-positron pair creation and annihilation, Möller scattering, Bhabha scattering, etc., we illustrate it for a trident process. Specifically, we consider electron-positron pair creation in the muon--laser-field collisions. We demonstrate that the probability distributions exhibit integrable singularities close to the threshold of pair creation. Also, a variety of resonances is observed that originate from the poles of the Feynman photon propagator. While those resonances are, in general, obscured by strong quantum interferences, we show that they can be isolated by changing the carrier envelope phase of the driving laser pulses. In that case, while transformed into the Lorentz-Breit-Wigner shape profile, the resonance position and width can be determined.
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。
