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Richard T. Scalettar:The Hubbard Model: From solids to cold atoms and back again
发布时间:2020-01-17     浏览次数:
The Hubbard Model: From solids to cold atoms and back again
 演讲人单位:  加州大学戴维斯分校
 演 讲 人:  Richard T. Scalettar 教授
 主持人单位:  北京师范大学
 主 持 人:  马天星 教授
 开 始 时 间:  2020年01月17日 10:30
 结 束 时 间  2020年01月17日 11:30
 举 办 地 点  物理楼106
 演 讲 说 明 

Abstract: Over the last half-century, the Hubbard Hamiltonian has been extensively studied and applied to some of the most fundamental problems in solid state physics. I will first discuss how it provides simple physical pictures which lead to a qualitative understanding of the origin of magnetism and insulating behavior in transition metal oxides, and even Cooper pairing and density inhomogeneities in high temperature superconductors. Unfortunately, exact solution (either analytic or numeric) of the Hubbard model is not possible except in special limits. In an effort to understand its properties better, attempts have been made over the last decade to emulate the Hubbard model with ultracold atoms. A description of these experiments, and their successes and failures, will be presented. Finally, in just the least year or so, a new proposal has emerged to emulate the Hubbard Hamiltonian using engineered defects in thin silicon sheets. This suggestion returns the model to its solid state roots, and may offer at last a quantitatively accurate revelation of its mysteries.



HONORS AND AWARDS

Charles Nash Award, 2018; Named Distinguisher Professor of Physics, 2017; American Physical Society Outstanding Referee, 2014; UCD Chancellor's Outstanding Undergraduate Mentor Award, 2009; Elected Fellow, American Physical Society, 2004


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