Field Theoretical Methods in Strongly Interacting and Strongly Disordered Condensed Matter Physics

强相互作用和强无序凝聚态物理中的场论方法

• 批准号: 0706140
• 负责人: Andreas Ludwig
• 金额: $ 24万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0706140&HistoricalAwards=false
• 关键词: Field; Theoretical; Methods; Strongly; Interacting

TECHNICAL SUMMARY:This award supports theoretical research and education under the umbrella of the NSF-wide Mathematical Sciences Priority Area. This project lies at the interface of theoretical condensed matter physics and mathematics.Many interesting phenomena observed in the condensed matter physicslaboratory are dominated by strong interactions or strong disorder. Theunderstanding of such systems is typically very challenging, due to the limitednumber of theoretical tools available for their description, standard paradigmsincluding for example Fermi-Liquid or other independent particle-typeapproaches are often not adequate to capture theThe focus of the work supported under this award is the application and the Development of novel theoretical methods aimed at treating such strong coupling problems. The focus of the research includes Non-Fermi-Liquid behavior inQuantum Impurity Problems dominated by strong interactions, localization Transitions in disordered electronic systems, and systems dominated by thesimultaneous effects of disorder and interactions. The PI will use methodsranging from conformal field theory, to the functional renormalization group, and the emerging field of the Stochastic Loewner Evolution.NON-TECHNICAL SUMMARY:This award supports theoretical research and education under the umbrella of The NSF-wide Mathematical Sciences Priority Area. This project lies at the Interface of theoretical condensed matter physics and mathematics.This research focuses on problems at the frontiers of condensed matter theory that involve materials or nanosystems with unusual properties. These often ariseas a consequence of strong interactions among electrons. Disorder, where thepositions of the atoms deviate significantly from highly ordered arrangements,may also play an important role. Understanding the effects of these two factorsworking in concert represents a formidable theoretical challenge. The PI will,develop new theoretical tools, some that benefit from recent advances in themathematical sciences, to advance research on the combined effects of stronginteraction and disorder in materials. This research aims to advance fundamentalscience and it interesting and important in its own right. It may also contribute tothe discovery of new phenomena and contribute to our understanding of complexmaterials that hold promise for future technological applications. This research activity will contribute to the education of the next generation of condensed matter theorist.

技术概述：该奖项支持国家科学基金会数学科学优先领域下的理论研究和教育。这个项目位于理论凝聚态物理和数学的交界处。在凝聚态物理实验室中观察到的许多有趣的现象都是由强相互作用或强无序主导的。对这类系统的理解通常是非常具有挑战性的，由于可用于描述它们的理论工具的数量有限，包括例如费米液体或其他独立的粒子类型方法在内的标准范式往往不足以捕捉到这一点。该奖项支持的工作的重点是应用和开发旨在处理这种强耦合问题的新的理论方法。研究的重点包括强相互作用主导的量子杂质问题中的非费米液体行为，无序电子系统中的局域跃迁，以及无序和相互作用共同作用下的体系。PI将使用从共形场论到泛函重整化群，以及随机洛夫纳演化的新兴领域的方法。非技术概述：该奖项支持NSF范围内数学科学优先领域的理论研究和教育。这个项目位于理论凝聚态物理和数学的交界处。这项研究集中在凝聚态理论的前沿问题，涉及到具有特殊性质的材料或纳米系统。这些通常是电子之间强烈相互作用的结果。无序，即原子的位置明显偏离高度有序的排列，也可能起到重要作用。理解这两个因素协同作用的影响是一项艰巨的理论挑战。PI将开发新的理论工具，其中一些工具受益于数学科学的最新进展，以促进对材料中强相互作用和无序的综合影响的研究。这项研究旨在促进基础科学的发展，它本身就很有趣，也很重要。它还可能有助于发现新的现象，并有助于我们理解复杂材料，这些材料有望在未来的技术应用中发挥作用。这项研究活动将有助于培养下一代凝聚态理论家。