U.S.-Hungary Materials Theory Research on Strongly Correlated and Mesoscopic Systems

这个美国-匈牙利的一个研究项目涉及两个团队，分别由新玩法罗格斯大学的皮尔斯科尔曼和他的合作伙伴、布达佩斯技术大学物理研究所的阿尔弗雷德·扎瓦多夫斯基领导。 他们的合作特点强相关系统的检查，重点是量子临界性和超导性在重费米子系统和电子相关效应在介观器件。 这些研究人员从最近在重费米子金属的磁量子临界点上进行的实验以及能够测量和观察单电子器件中强关联态的纳米科学发展中找到了动力。该项目的研究计划包括：1）近藤晶格中的磁量子临界点; 2）重费米子化合物中的超导有序; 3）量子点的动力学和非平衡性质。 将采用各种数值和分析方法，包括从粒子方法和大N展开;微扰重整化群技术和e-展开;动力学平均场理论计算结合数值重整化群方法。 如果成功的话，这些发现将有助于我们了解纳米尺度上的新现象，这些新现象可能适用于特殊制造的材料。这个国际材料理论研究项目通过使美国和中欧的专家能够联合收割机互补人才并在相互感兴趣和有能力的领域共享研究资源，实现了推进科学知识的计划目标。

This U.S.-Hungarian research project involves two teams led by Piers Coleman of Rutgers University, New Brunswick, and his partner Alfred Zawadowski of the Physics Institute at the Technical University, Budapest. Their collaboration features examination of strongly correlated systems with an emphasis on quantum criticality and superconductivity in heavy fermion systems and electronic correlation effects in mesoscopic devices. These researchers found motivation in recent experiments performed at the magnetic quantum critical point of a heavy fermion metal and in nano-science developments that enable measurements and observations of strongly correlated states in single electron devices.The project's research plan features study of: 1) magnetic quantum critical point in the Kondo lattice; 2) superconducting order in heavy fermion compounds and 3) dynamical and out-of equilibrium properties of quantum dots. Various numerical and analytical methods will be employed including slave particle methods and large N expansions; perturbative renormalization group techniques and e-expansions; and dynamical mean field theory calculations combined with numerical renormalization group methods. If successful, findings should contribute to our knowledge of new phenomena on a nanometer scale that may be applicable in specially fabricated materials. This international research project in materials theory fulfills the program objective of advancing scientific knowledge by enabling experts in the Untied States and Central Europe to combine complementary talents and share research resources in areas of strong mutual interest and competence.