Research in High Energy Theoretical Physics

研究将在理论基本粒子物理学的两个子领域进行。 其中一个项目将涉及弦理论，它是统一自然界中所有基本相互作用的最有希望的候选者。 特别注意的是，可以完全解决模型，以提取物理的见解，并将其应用到真实的世界。 该策略是搜索明显不同的模型之间的确切关系，然后将其用于解决更困难和现实的模型。 该项目还将研究在高磁场下在界面中观察到的材料物理学新现象的理论基础。 感兴趣的现象与一类或量子统计相关，扩展了与玻色，爱因斯坦，费米和狄拉克等研究人员相关的想法。 了解材料行为中丰富多样的复杂现象的理论基础，增强了我们开发新材料和应用的能力。 第二个项目将通过使用高性能计算机模拟继续进行量子色动力学（强核相互作用理论）的第一原理研究。 重点是放在测试和改进的计算方法，承诺大大降低计算成本，大大扩展数值模拟的力量。 新方法将使人们有可能从实验结果出发，提取迄今为止关于自然界基本相互作用的最精确信息。 它们也将被用来探索夸克和胶子之间的高温相变限制在核粒子，如核子和自由夸克胶子等离子体。 这种相变发生在早期宇宙的演化中，并且被认为是在布鲁克海文国家实验室正在建设的RHIC加速器的重离子碰撞实验室中可以实现的。 这些研究对于扩展我们对物理世界和宇宙起源的最基本基础的理解非常重要。 有关新的计算方法的想法很可能在其他计算领域中得到应用。

Research will be carried out in two subfields of theoretical elementary particle physics. One project will deal with string theory, the most promising candidate for the unification of all the fundamental interactions in nature. Particular attention is paid to models that can be exactly solved to extract physical insights and to apply them to the real world. The strategy is to search for exact relations between apparently different models, which will be then used to solve more difficult and realistic models. This project will also investigate the theoretical basis of novel phenomena in materials physics, observed in interfaces at high magnetic field. The phenomena of interest are associated with a class or quantum statistic, extending ideas associated with researchers such as Bose, Einstein, Fermi and Dirac. Understanding the theoretical basis for the rich variety of complex phenomena in the behavior of materials strengthens our ability to develop new materials and applications. A second project will continue first principle studies of quantum chromodynamics (the theory of the strong nuclear interactions) through the use of high performance computer simulations. Emphasis is to be placed on testing and refining improved methods of computation that promise to extend dramatically the power of numerical simulation at a vastly reduced computational cost. The new methods will make it possible, starting from experimental results, to extract the most precise information to date about the fundamental interactions in nature. They will also be used to explore the high temperature phase transition between quarks and gluons confined in nuclear particles such as nucleons and the free quark-gluon plasma. Such a phase transition occurred in the evolution of the early universe and is thought to be achievable in the laboratory in collisions of heavy ions at the RHIC accelerator currently under construction at the Brookhaven National Laboratory. These studies are important for extending our understanding of the most fundamental basis of our physical world and of the origins of our universe. Ideas concerning new computational methods are likely to have applications in other computational fields.