FLUID DIMER CRITICAL-POINT IN S=1/2 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH NEXT NEAREST NEIGHBOR INTERACTIONS
FLUID DIMER CRITICAL-POINT IN S=1/2 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH NEXT NEAREST NEIGHBOR INTERACTIONS
复制标题
DOI：
10.1016/0375-9601(92)90823-5
复制
发表时间：
1992-10-12
影响因子：
2.6
通讯作者：
NOMURA, K
中科院分区：
文献类型：
--
作者：
OKAMOTO, K;NOMURA, K
数值研究了具有次近邻相互作用的S = 1/2反铁磁海森堡链H=JSIGMA（S（j）.S（j+1）+ alphaS（j）. S（j+2））基态流体-二聚体相变的临界值α（c），其中J > 0，α> 0. 在共形场论的帮助下，我们可以估计alpha（c）=0.2411 +/- 0.0001。
We numerically investigate the critical value alpha(c) of the fluid-dimer transition in the ground state of the S = 1/2 antiferromagnetic Heisenberg chain with next nearest neighbor interactions, H=JSIGMA (S(j).S(j+1) + alphaS(j).S(j+2)) with J > 0 and alpha > 0. With the help of the conformal field theory, we can estimate alpha(c)=0.2411 +/- 0.0001.