GAUGE THEORIES AT ZERO AND NONZERO TEMPERATURES

零和非零温度下的规范理论

• 批准号: 0070883
• 负责人: V Nair
• 金额: $ 11.7万
• 依托单位: CUNY City College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0070883&HistoricalAwards=false
• 关键词: GAUGE; THEORIES; ZERO; NONZERO; TEMPERATURES

Quantum Chromodynamics or QCD is the currently accepted and well-tested theory which sums up our knowledge, to date, of quarks, which are the fundamental constituents of nuclear matter, and of gluons, the particles responsible for nuclear forces. The collisions of heavy atomic nuclei at the relativistic heavy ion collider (RHIC) in Brookhaven is expected to produce a new state of matter, the so-called quark-gluon plasma, which will provide an important new testing ground for QCD, with extreme conditions for various physical parameters such as pressure and temperature, and thus potentially leading to further elucidation,confirmation or extension of the theory. The expected weakening of interparticle forces under such conditions, the so-called screening effects, will be an important ingredient in the interpretation of data from RHIC.In this project, theoretical investigations of different types of screening effects in the quark-gluon plasma, as well as a number of related questions, will be carried out. The basic mathematical strategy, which is an extension of previously used techniques, will be to relate QCD to suitable theories in lower and higher number of spacetime dimensions, an approach which has provided significant new insights recently. Whereverappropriate, results obtained will be correlated with numerical computer-based analysis of such theories.

量子色动力学或 QCD 是目前被接受和经过充分测试的理论，它总结了迄今为止我们对夸克（核物质的基本组成部分）和胶子（负责核力的粒子）的知识。 布鲁克海文相对论性重离子对撞机（RHIC）中的重原子核碰撞预计将产生一种新的物质状态，即所谓的夸克-胶子等离子体，这将为量子色动力学提供一个重要的新试验场，在极端条件下对于压力和温度等各种物理参数，从而可能导致理论的进一步阐明、确认或扩展。在这种条件下，粒子间力的预期减弱，即所谓的屏蔽效应，将成为解释 RHIC 数据的一个重要因素。在这个项目中，夸克-胶子等离子体中不同类型的屏蔽效应的理论研究，如以及一些相关问题，将进行。基本的数学策略是以前使用的技术的扩展，它将把 QCD 与较低和较高数量的时空维度中的合适理论联系起来，这种方法最近提供了重要的新见解。 在适当的情况下，获得的结果将与此类理论的基于计算机的数值分析相关。