Testing the topological nature of the fractional quantum Hall edge.
Testing the topological nature of the fractional quantum Hall edge.
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DOI：
10.1103/physrevlett.102.116801
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发表时间：
2009-03
影响因子：
8.6
通讯作者：
Shivakumar Jolad;J. Jain
中科院分区：
文献类型：
--
作者：
Shivakumar Jolad;J. Jain
我们进行数值对角化比以前更大的系统，通过限制分数量子霍尔（coherH）边缘激发的基础上，是精确的短程相互作用和非常准确的库仑相互作用。这使我们能够对边缘物理的预测普遍性进行实质性的测试。我们的研究结果表明，即使在没有边缘重建的情况下，BTH边缘的行为本质上也是非普适的，因此可能与体BTH状态的性质没有尖锐和独特的关系。
We carry out numerical diagonalization for much larger systems than before by restricting the fractional quantum Hall (FQH) edge excitations to a basis that is exact for a short-range interaction and very accurate for the Coulomb interaction. This enables us to perform substantial tests of the predicted universality of the edge physics. Our results suggest the possibility that the behavior of the FQH edge is intrinsically nonuniversal, even in the absence of edge reconstruction, and therefore may not bear a sharp and unique relation to the nature of the bulk FQH state.