U.S.-Federal Republic of Germany Cooperative Research: Lattice Gauge Theory Simulations

美德合作研究：格子规范理论模拟

• 批准号: 8922411
• 负责人: Bernd Berg
• 金额: $ 1.5万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1991-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8922411&HistoricalAwards=false
• 关键词: U.S.; Federal; Republic; Germany; Cooperative

This award supports Professor Bernd Berg of Florida State University and several of his graduate students for >collaborative research visits to the Physics Department of the University of Bielefeld, Federal Republic of Germany, where they will work with Professor Bengt Petersson and others. They are working on a variety of topics in lattice gauge theory and computation, including large scale computer simulations of quantum field theories, in particular Quantum Chromodynamics (QCD). The German group has been working mainly with a Cray computer, and has free access to several supercomputer facilities at Bielefeld and Juelich. Such experience will upgrade the capabilities of the U.S. group, which has been working on Cyber and ETA supercomputers. QCD is the generally accepted candidate for the theory of strong particle interactions. It is typically relevant at scales which are smaller than 1 Fermi = 10 to the minus 12th centimeter. Experimentally such small distances are investigated with large colliders; observations of relics from the very early universe also provide information. There are severe technical difficulties in trying to calculate actual numbers from QCD. Presently, the leading approach to overcome these difficulties is by means of large scale computer simulations. Part of this collaborative proposal is to exploit finite size scaling concepts to shed light on many open QCD problems. Another aspect involves pioneering the use of supercomputers as a new tool for investigating quantum gravity related problems.

该奖项支持佛罗里达州立大学的伯恩德·伯格教授和他的几位研究生进行>合作研究访问，与德国联邦共和国比勒菲尔德大学物理系进行了合作研究，他们将在那里与本格特·彼得森教授和其他人合作。 他们正在研究晶格仪理论和计算中的各种主题，包括量子场理论的大型计算机模拟，特别是量子染色体动力学（QCD）。 德国集团主要使用Cray计算机合作，并可以免费访问Bielefeld和Juelich的多个超级计算机设施。 这样的经验将升级一直在网络和ETA超级计算机的美国集团的功能。 QCD是强粒子相互作用理论的普遍接受的候选者。 它通常在小于1费米= 10的尺度上与减去12厘米相关。 在实验上，研究了如此小的距离。对早期宇宙中遗物的观察也提供了信息。 试图计算QCD的实际数字存在严重的技术困难。 目前，克服这些困难的主要方法是通过大规模的计算机模拟。 该协作建议的一部分是利用有限尺寸缩放概念来阐明许多开放的QCD问题。 另一个方面涉及开拓使用超级计算机作为研究量子重力相关问题的新工具。