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arXiv 0901.1498cond-mat.str-elcond-mat.mes-hallcond-mat.stat-mechhep-th
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超对称价键固态

Supersymmetric Valence Bond Solid States

Daniel P. Arovas, Kazuki Hasebe, Xiao-Liang Qi, Shou-Cheng Zhang

摘要:

在这项工作中,我们调查的价键固体(SVBS)状态的超对称版本。在一维空间中,SVBS态连续地插入整数和半整数自旋链的价键态之间,它们通常描述超导价键液态。这些态的自旋和超导关联函数可以精确计算,并且它们的关联长度在超对称点处相等。在更高的维度下,SVBS态的波函数可以描述共振价键态(RVB)。自旋模型的SVBS状态被证明是精确地类似于玻色子Pfronan态的量子霍尔效应。我们也给出了微观哈密顿量的SVBS状态是确切的基态。

英文摘要:

In this work we investigate the supersymmetric version of the valence bond solid (SVBS) state. In one dimension, the SVBS states continuously interpolate between the valence bond states for integer and half-integer spin chains, and they generally describe superconducting valence bond liquid states. Spin and superconducting correlation functions can be computed exactly for these states, and their correlation lengths are equal at the supersymmetric point. In higher dimensions, the wave function for the SVBS states can describe resonating valence bond states (RVB). The SVBS states for the spin models are shown to be precisely analogous to the bosonic Pfaffian states of the quantum Hall effect. We also give microscopic Hamiltonians for which the SVBS state is the exact ground state.

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。

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