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arXiv 1606.02255cond-mat.str-el
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对“可果美晶格上的$Z_{2}$自旋液相:一个新的鞍点”的评论,李涛[ arXiv:1601.02165(2016)]

Comment on "$Z_{2}$ spin liquid phase on the kagome lattice: a new saddle point", by Tao Li [arXiv:1601.02165 (2016)]

Yasir Iqbal, Didier Poilblanc, Federico Becca

摘要:

在最近的一篇论文[arXiv:1601.02165]中,李涛声称,使用投影的古茨维勒费米子波函数获得的带隙$\mathbb{Z}_2$自旋液体可以在戈薇晶格上的海森堡模型中稳定下来。我们进行了非常精确的变分计算,并证实了前所未有的准确性的事实,即$\mathbb{Z}_{2}$自旋液体是一个本地的能量最小值,随着系统的大小,从而重申了一个无间隙的$U(1)$狄拉克自旋液体基态的情况。

英文摘要:

In a recent paper [arXiv:1601.02165], Tao Li claimed that a gapped $\mathbb{Z}_2$ spin liquid, obtained using projected Gutzwiller fermionic wave functions, can be stabilized in the Heisenberg model on the kagome lattice. We perform very accurate variational calculations and confirm with unprecedented accuracy the fact, that the $\mathbb{Z}_{2}$ spin liquid is a local energy minimum that goes away with system size, thus reaffirming the scenario of a gapless $U(1)$ Dirac spin liquid 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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