标题： 强场中的量子电动力学 显示英文标题

标题： QED in strong fields

摘要： 我们讨论强场中的原子物理现状。 我们关注在重离子碰撞中观察到的电子-正电子线问题以及QED效应，这些效应在强库仑场中进行了计算，特别是Delbrück散射。 我们讨论这些效应与偏转和束流辐射之间的相似性和差异性。 我们研究了光子偏转的前景，基于狄拉克方程从头计算了偏转，并确定了两个高能粒子脉冲碰撞中电子-正电子对产生的速率。 显示英文摘要

摘要： We discuss the status of atomic physics in strong field. We focus on the problem of electron-positron lines observed in heavy-ion collisions and on QED effects, calculated in strong Coulomb fields, especially Delbr\"uck-scattering. We discuss the similarities and differences between these effects and channeling respectively beamstrahlung. We investigated the prospects for photon-channeling, calculated channeling from first principles on the basis of the Dirac equation, and determined the rate for electron-positron pair production in the collision of two high-energy particle pulses.