Condensed Matter Theory

9714055吉文，标题广泛，这是一项多项目拨款，旨在考虑凝聚态理论中的各种当前问题。这些少年派在印第安纳大学组建的小组，被普遍认为是许多前沿问题的领导者。这一续期拨款包括约瑟夫森结阵列中的相变项目，对可能的数值方法的分析，包括密度矩阵重整化群和动态平均场理论，天空米子晶格相变的可能性，极低温度下的量子相变，受限几何中的超流4He，其中它被认为是强关联和无序之间复杂相互作用的原型，量子霍尔边态和超小超导颗粒。这笔补助金继续支持这两位高级PI的前沿工作。他们在创新研究、有效培养年轻学生和同事以及社区服务方面被公认为世界上最好的人之一，包括最近在NRC和NSF的小组讨论。他们的研究计划涵盖了广泛的主题，包括高磁场下的电子气(和超导)，试图改善数值技术和超小粒子的超导能力。***

9714055 Girvin With a wide ranging title, this is a multi-project grant to consider a large variety of current problems in condensed matter theory. The group which these PI have assembled at the Indiana University, is generally acknowledged as a leader in numerous forefront problems. This renewal grant contains projects on phase transitions in Josephson junction arrays, on an analysis of possible numerical methods incorporating both the density matrix renormalization group and also the dynamic mean field theory, possibility of a skyrmion lattice phase transition, quantum phase transitions at very low temperatures, superfluid 4He in confined geometries where it is believed to be a prototype for the complex interplay between strong correlation and disorder, quantum Hall edge states and ultra-small superconducting grains. %%% This grant continues to support the cutting-edge work of these two senior PI's. They are acknowledged as amongst the world's best in innovative research, effective nurturing of younger students and colleagues and community service, including the recent panels at NRC and at NSF. Their research program spans a broad spectrum of topics including electron gas (and superconductivity) at high magnetic fields, attempts to improve numerical techniques and superconductivity in ultra-small particles. ***