Advanced Computational Physics in Atomic and Laser Science

原子和激光科学中的高级计算物理

• 批准号: 1068547
• 负责人: Ulrich Jentschura
• 金额: $ 26.4万
• 依托单位: Missouri University of Science and Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1068547&HistoricalAwards=false
• 关键词: Advanced; Computational; Physics; Atomic; Laser

Quantum electrodynamics is a cornerstone of our current understanding of nature, as it describes the best understood of the four fundamental forces, the electromagnetic force, including relativistic and quantum effects which modify this force at very short distances. Almost all of the most accurately known fundamental constants are determined using the theory, and theoretical calculations in this field require some of the most advanced computational methods devised so far in theoretical physics. It is planned to illuminate the nature of various higher-order correction terms that currently influence one of the most pressing problems in theoretical physics, namely, the resolution of the muonic hydrogen conundrum, where theory and experiment are not in agreement. Various related interactions, including the loss of energy due to non-contact friction, have not been sufficiently understood in the microscopic world and yet are important, e.g., for the design of nanostructured devices (nanotechnology).The broader impact of the work will include potential applications in the nanoworld, and the determination of fundamental constants, as well as investigations regarding their conceivable variation with time. Another impact is on numerical algorithms for so-called special functions describing physical and technical processes, and for the diagonalization of matrices where industrial applications can also be envisaged. The education of a graduate student forms an integral part of the proposed research endeavour.

量子电动力学是我们目前对自然的理解的基石，因为它描述了四种基本力中最好的理解，电磁力，包括相对论和量子效应，它们在很短的距离内改变了这种力。 几乎所有已知的最精确的基本常数都是使用该理论确定的，并且该领域的理论计算需要理论物理学中迄今为止设计的一些最先进的计算方法。计划阐明各种高阶修正项的性质，这些修正项目前影响理论物理中最紧迫的问题之一，即μ介子氢难题的解决方案，其中理论和实验不一致。各种相关的相互作用，包括由于非接触摩擦引起的能量损失，在微观世界中尚未得到充分理解，但仍然很重要，例如，这项工作的更广泛影响将包括在世界上的潜在应用，确定基本常数，以及研究它们随时间的可能变化。 另一个影响是对数值算法的所谓的特殊功能描述的物理和技术过程，并为对角化的矩阵，其中工业应用也可以设想。研究生教育是拟议研究工作的一个组成部分。