Critical Behavior of the S=3/2 Antiferromagnetic Heisenberg Chain.
Critical Behavior of the S=3/2 Antiferromagnetic Heisenberg Chain.
复制标题
S=3/2 反铁磁海森堡链的临界行为。
DOI:
10.1103/physrevlett.76.4955
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发表时间:
1996
影响因子:
8.6
通讯作者:
A. Moreo
中科院分区:
文献类型:
--
作者:
Karen Hallberg;Xiaoqun Wang;Peter Horsch;A. Moreo
Using the density-matrix renormalization-group technique we study the long-wavelength properties of the spin S=3/2 nearest-neighbor Heisenberg chain. We obtain an accurate value for the spin velocity v=3.8+- 0.02, in agreement with experiment. Our results show conclusively that the model belongs to the same universality class as the S=1/2 Heisenberg chain, with a conformal central charge c=1 and critical exponent eta=1