PASI: Workshop on Mottness and Quantum Criticality; Trinidad, June 2005

由美国国家科学基金会和美国能源部共同支持的泛美高级研究所（PASI）拟于2005年6月在西印度群岛的托巴哥举行关于Mottness和量子临界性的会议。该主题涉及的问题是核心的铜氧化物材料和有机超导体中的超导性的起源，以及U和Ce金属间化合物（重费米子）的非费米液体行为的未解决的问题。这个为期两周的研究所将汇集该领域的主要研究人员，专注于这两个问题。PASI将由大约20名讲师和30名研究生组成，一半来自美国，一半来自美洲其他地区，由组委会选出。五个问题将构成PASI的重点：1）量子临界点影响铜酸盐有限温度特性的实验证据是什么？2)莫特标度上的光谱重量转移在铜氧化物的正常态和超导态中起什么作用？，3)接近量子临界点的无序扮演什么角色？4)强相关系统的模型研究是否具有预测能力？5)我们可以从平行系统，如有机超导体、重费米子和低维系统中的新金属相学到什么？为了进一步扩大PASI的影响，组织者1）包括了实验学家和理论家，2）限制了会议的范围，以集中讨论上述非常具体的问题。研讨会将有充足的时间用于讨论，部分原因是为了开展合作，阐明提出的问题。由于这些问题是当前关于强关联电子的辩论的核心，PASI是及时的，并且可能在该主题中产生进一步的活动。

0418330PhillipsA Pan-American Advanced Studies Institute (PASI), jointly supported by the NSF and Department of Energy is proposed on the topic of Mottness and Quantum Criticality, to be held in Tobago, West Indies during June, 2005. The topic involves problems that are central to the unsolved problems of the origin of superconductivity in the copper-oxide materials and organic superconductors, and non-Fermi liquid behavior in U and Ce intermetallics (heavy fermions). This two-week institute will bring together leading researchers in the field to focus on both of these problems. The PASI will consist of approximately 20 lecturers and 30 graduate students, half from the US and half from the rest of the Americas, to be selected by an organizing committee. Five questions will comprise the focus of the PASI: 1) What is the experimental evidence that quantum critical points influence finite temperature properties of the cuprates?, 2) What role does spectral weight transfer over the Mott scale play in the normal and superconducting states of the cuprates?, 3) What is the role played by disorder close to quantum critical points?, 4) Do model studies of strongly correlated systems have any predictive power? 5) What can be learned from parallel systems such as the organic superconductors, heavy fermions and novel metal phases in low dimensional systems? To further the impact of the PASI, the organizers have 1) included both experimentalists and theorists and 2) limited the scope of the conference to focus on the very specific questions posed above. Ample time in the workshop will be devotedto discussions, in part to enable collaborations that could elucidate the posed questions. As these questions are central to the current debate on strongly correlated electrons, the PASI is timely and is likely to generate further activity in the subject matter.