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手机赌博app    Hidden SU(2) Symmetries, the Symmetry Hierarchy and the Emergent Eight-Fold Way in Spin-1 Quantum Magnets


【报告题目】 Hidden SU(2) Symmetries, the Symmetry Hierarchy and the Emergent Eight-Fold Way in Spin-1 Quantum Magnets
【报 告 人】 周毅 教授
              浙江大学手机赌博网站
【时 间】 2018-12-07     10:30-11:30AM (Friday)
【地 点】 北园物理楼106报告厅

【报告摘要】

The largest allowed symmetry in a spin-1 quantum system is an SU(3) symmetry rather than the SO(3) spin rotation. We reveal some SU(2) symmetries as subgroups of SU(3) that, to the best of our knowledge, have not previously been recognized. Then, we construct SU(2) symmetric Hamiltonians and explore the ground-state phase diagram in accordance with the symmetry hierarchy. It is natural to treat the eight generators of the SU(3) symmetry on an equal footing; this approach is called the eight-fold way. We find that the spin spectral functions and spin quadrupole spectral functions share the same structure, provided that the elementary excitations are flavor waves at low energies, which serves as a clue to the eight-fold way. An emergent S=1/2 gapless quantum spin liquid is found to coexist with spin nematic order in one of the ground states.

 

Reference: Hui-Ke Jin, Jian-Jian Miao, Yi Zhou, arXiv:1811.0047 (2018)

 

 

 


【报告人简介】

周毅,1998年本科毕业于清华大学手机赌博网站,2004年1月在清华大学高等研究院获得博士学位。曾在德国马克斯-普朗克-复杂手机赌博网站统研究所(德累斯顿)、香港科技大学、香港大学、香港中文大学做博士后研究。2009年获得浙江大学教职,现为浙江大学教授。从事凝聚态物理理论的研究,涉及超导、磁性、电子关联系统和拓扑系统,发表论文50余篇。在量子自旋液体、新型超导理论等方面取得有影响的成果,应邀为《Nature Physics》与《Reviews of Modern Physics》等撰写评论与综述文章。


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