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RUI: Spatial and Temporal Dynamics of Matter in Intense Laser Fields

RUI：强激光场中物质的时空动力学

基本信息

批准号：
2106585
负责人：
Rainer Grobe
金额：
$ 31万
依托单位：
Board of Trustees of Illinois State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-08-15 至 2024-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2106585&HistoricalAwards=false
关键词：
RUI Spatial Temporal Dynamics Matter

项目摘要

This research work aims at providing a better fundamental understanding of the interaction of matter or the quantum vacuum with laser pulses or other strong external fields. The work focuses on new phenomena that are predicted to occur if laser fields are sufficiently intense to trigger the creation of electron-positron pairs. The interdisciplinary character of the new era of laser-controlled matter creation processes to which the work will contribute could provide new connections between atomic, plasma and laser physics. Due to the fundamental nature of the processes examined in these projects, progress could also accelerate advancements in other areas. For example, a better understanding of the electron-positron dynamics could benefit the related development of bright light sources, providing new ways to control atomic, chemical and biological processes on very short time scales. An important mission for the program is also to give undergraduate students the opportunity to gain personal research experience and provide them with important skills, including working as a team and gaining the endurance and intellectual flexibility to tackle serious research problems. The understanding of the relativistic quantum dynamics will be advanced primarily with the aid of computer simulations to allow for spatial and temporal resolution that has been developed by the PIs to solve the quantum field theoretical Dirac equation. It will also be supported by modern machine learning techniques, such as symbolic regression based on evolutionary algorithms as well as on neural networks. The goal is to develop novel theoretical approaches that can lead to a first insight into the internal dynamics inside the laser field with complete spatial resolution.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项研究工作的目的是为了更好地理解物质或量子真空与激光脉冲或其他强外场的相互作用。这项工作的重点是，如果激光场的强度足以触发电子-正电子对的产生，预计会发生的新现象。激光控制物质产生过程新时代的跨学科特性将为原子、等离子体和激光物理之间提供新的联系。由于这些项目所审查的进程的基本性质，取得的进展也可能加速其他领域的进展。例如，更好地理解电子-正电子动力学可能有利于明亮光源的相关开发，为在很短的时间尺度上控制原子、化学和生物过程提供新的方法。该项目的一个重要任务是为本科生提供获得个人研究经验的机会，并为他们提供重要的技能，包括团队合作，获得解决重大研究问题的耐力和智力灵活性。对相对论性量子动力学的理解将主要借助计算机模拟来推进，以允许pi为解决量子场理论狄拉克方程而开发的空间和时间分辨率。它还将得到现代机器学习技术的支持，例如基于进化算法和神经网络的符号回归。我们的目标是开发新的理论方法，从而首次深入了解具有完整空间分辨率的激光场内部动力学。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。