Spatial and temporal dynamics of matter in intense laser fields

该项目旨在提供对物质与激光脉冲或外场的非微扰相互作用的更好理解。在三个项目组中，对非线性量子动力学的理解将主要借助于计算机模拟来提高空间和时间分辨率。研究的另一个目的是探索新的概念和工具，以激发进一步的理论和实验兴趣。第一个项目的重点是如果激光场足够强以触发或影响真空中电子-正电子对的产生时会发生的新现象。这些研究将建立在一种计算技术的基础上，这种技术是由PI开发的，用于解决时空中的量子场论方程。第二个项目是研究空间分辨的电子-光子-电子相互作用，并寻找库仑力的起源。它是基于一个non-unitaryquantum力学形式主义，允许计算进行。第三个项目序列从理论上和实验上探讨了激光场通过异质电介质随机介质的传播。

This project aims at providing a better understanding of the non-perturbative interactionof matter with laser pulses or external fields. In each of the three project groups, theunderstanding of the nonlinear quantum dynamics will be advanced primarily with theaid of computer simulations to allow for spatial and temporal resolution. It is also an aimof the research to explore new concepts and tools that could stimulate furthertheoretical and experimental interest.The first sequence of projects focuses on new phenomena that occur if laser fields aresufficiently intense either to trigger or affect the creation of electron-positron pairs fromvacuum. The studies will build on a computational technique that has been developedby the PIs to solve the quantum field theoretical equations in space-time. The secondsequence of projects examines the spatially resolved electron-photon-electroninteraction and searches for the origin of the Coulomb force. It is based on a non-unitaryquantum mechanical formalism that allows the computation to be carried out. The thirdsequence of projects explores theoretically as well as experimentally the propagation oflaser fields through heterogeneous dielectric random media.