arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1601.02594cond-mat.str-elcond-mat.mes-hall
收藏

可能的SU(3)Kagome晶格上的手征自旋液体

Possible SU(3) Chiral Spin Liquid on the Kagome Lattice

Ying-Hai Wu, Hong-Hao Tu

摘要:

我们在Kagome晶格上提出了一个SU(3)对称的短程相互作用哈密顿量,并证明了它具有阿贝尔手征自旋液体(CSL)态。我们提供了基于精确对角化的数值证据,表明CSL状态在参数空间的扩展区域中是稳定的,并且可以被视为Halperin 221分数量子霍尔(HHH)状态的两组分玻色子的晶格版本。我们还构造了该CSL态的部分子波函数,并证明其变分能量与精确对角化结果符合得很好。部分子描述进一步支持了CSL是由SU(3)_1 Wess-Zumino-Witten型手征边共形场论(CFT)刻画的。

英文摘要:

We propose an SU(3) symmetric Hamiltonian with short-range interactions on the Kagome lattice and show that it hosts an Abelian chiral spin liquid (CSL) state. We provide numerical evidence based on exact diagonalization to show that this CSL state is stabilized in an extended region of the parameter space and can be viewed as a lattice version of the Halperin 221 fractional quantum Hall (FQH) state of two-component bosons. We also construct a parton wave function for this CSL state and demonstrate that its variational energies are in good agreement with exact diagonalization results. The parton description further supports that the CSL is characterized by a chiral edge conformal field theory (CFT) of the SU(3)_1 Wess-Zumino-Witten type.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑