摘要翻译:
大自旋冷原子系统可以表现出通常自旋1/2体系中所没有的新的磁性能。研究了具有自旋3/2冷费米子的三维立方光学晶格中的SU(4)共振板态。构造了一种新的规范场形式来描述哈密顿量的Rokhsar-Kivelson型,并用对偶变换来研究相图。由于拓扑缺陷的大量存在,量子模型的整个相图通常都存在间隙,这与最近的数值研究结果是一致的。发现了经典的plaquette体系的临界线,该临界线也对应于“plaquette液相”中的量子多体波函数。
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英文标题:
《Resonating plaquette phases in large spin cold atom systems》
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作者:
Cenke Xu and Congjun Wu
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最新提交年份:
2008
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分类信息:
一级分类:Physics 物理学
二级分类:Strongly Correlated Electrons 强关联电子
分类描述:Quantum magnetism, non-Fermi liquids, spin liquids, quantum criticality, charge density waves, metal-insulator transitions
量子磁学,非费米液体,自旋液体,量子临界性,电荷密度波,金属-绝缘体跃迁
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
Large spin cold atom systems can exhibit novel magnetic properties which do not appear in usual spin-1/2 systems. We investigate the SU(4) resonating plaquette state in the three dimensional cubic optical lattice with spin-3/2 cold fermions. A novel gauge field formalism is constructed to describe the Rokhsar-Kivelson type of Hamiltonian and a duality transformation is used to study the phase diagram. Due to the proliferation of topological defects, the system is generally gapped for the whole phase diagram of the quantum model, which agrees with the recent numerical studies. A critical line is found for the classical plaquette system, which also corresponds to a quantum many-body wavefunction in a "plaquette liquid phase".
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PDF链接:
https://arxiv.org/pdf/801.0744