对PDKEEPAAA：0811.1575的评论，题为"三角晶格上哈伯德模型中的量子相变"，T。Yoshioka，A. Koga和N.川上
Comment on arXiv:0811.1575 entitled "Quantum phase transitions in the Hubbard model on triangular lattice" by T. Yoshioka, A. Koga and N. Kawakami
摘要：
我们证明了Yoshioka等人在arXiv：0811.1575中得到的三角晶格上的哈伯德模型的顺磁金属和Hubbard Mott绝缘体之间的相界并不能正确地代表热力学极限，而是他们所依赖的6 × 6晶格的假象。经过系统尺寸外推，相界位于Morita等人提出的U/t = 5.2处，日本物理学会71（2008）2109中，并且与Yoshioka等人相反。这里，U是现场库仑排斥，t是最近邻转移。
英文摘要：
We show that the phase boundary between the paramagnetic metal and the nonmagnetic Mott insulator for the Hubbard model on a triangular lattice obtained by Yoshioka et al. in arXiv:0811.1575 does not correctly represent that of the thermodynamic limit but is an artifact of the 6 by 6 lattice they rely on. After the system size extrapolation, the phase boundary is located at U/t=5.2 as proposed by Morita et al., J. Phys. Soc. Jpn. 71 (2008) 2109 and in contrast to Yoshioka et al. Here, U is the onsite Coulomb repulsion and t is the nearest-neighbor transfer.
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