Transport Properties of Condensed Matter Systems

凝聚态系统的输运特性

• 批准号: 9632978
• 负责人: Theodore Kirkpatrick
• 金额: $ 16.8万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-15 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9632978&HistoricalAwards=false
• 关键词: Transport; Properties; Condensed; Matter; Systems

9632978 Kirkpatrick Theoretical research will be done on low temperature disordered electronic systems. The four specific topics of emphasis are: (1) disordered (and clean) itinerant quantum ferromagnets; (2) disordered itinerant quantum antiferromagnets; (3) the metal-insulator transition as a random field problem; (4) general aspects of field theories for disordered interacting electrons. The methodologies include the construction of effective field theories, renormalization group techniques, and many-body perturbation theory. %%% The problem of strongly interacting electron systems is a major one in modern condensed matter physics. Researchers have discovered over the past few years that such fundamental issues as magnetism in metals are not really understood at a fundamental level and that existing theoretical methods are not sufficient to gain a deep understanding of the problem. This grant will look at a number of problems related to the central one of strongly interacting electron systems and use, and develop, a variety of powerful mathematical techniques in order to do this. ***

对低温无序电子系统进行理论研究。重点强调的四个具体主题是：(1)无序（和清洁）流动量子铁磁体；(2)无序流动量子反铁磁体；(3)金属-绝缘子过渡作为随机场问题；(4)无序相互作用电子场论的一般方面。方法包括有效场论的构建、重整化群技术和多体微扰理论。强相互作用电子系统的问题是现代凝聚态物理中的一个主要问题。在过去的几年里，研究人员发现，像金属中的磁性这样的基本问题并没有在基本层面上得到真正的理解，现有的理论方法也不足以深入了解这个问题。这项拨款将着眼于一些与强相互作用电子系统的核心问题相关的问题，并使用和开发各种强大的数学技术来实现这一目标。＊＊＊