标题： 电子-电子束碰撞中的异常约束 显示英文标题

标题： Anomalous pinch in electron-electron beam collision

摘要： 我们证明在超相对论电子-电子或正电子-正电子束相互作用中，可以发生异常压缩现象，这是由集体束运动（破坏）和强场量子电动力学（SF-QED）的共同作用引起的。 局部产生的电子-正电子对，来自SF-QED效应，会屏蔽束的自场，并可能反转洛伦兹力的极性，从而导致束的压缩。 一个理论模型预测了压缩条件，并通过第一性原理的三维粒子-网格模拟得到验证。 这种异常压缩增强了密度压缩，提高了碰撞亮度，并将束粒子的局部磁场和量子参数放大几个数量级。 显示英文摘要

摘要： We show that an anomalous pinch can occur in ultrarelativistic electron-electron or positron-positron beam interaction, caused by the combined interplay of collective beam motion (disruption) and strong-field quantum electrodynamics (SF-QED). The locally created electron-positron pairs, from SF-QED effects, screen the self-fields of the beams and can invert the polarity of the Lorentz force resulting in a pinch of the beams. A theoretical model predicts the pinch condition and is confirmed by first-principles 3-dimensional particle-in-cell simulations. This anomalous pinch enhances density compression, increases the collision luminosity, and amplifies the local magnetic fields and the quantum parameter of the beam particles by several orders of magnitude.