论文标题
热力学极限中竞争性自旋链的确切物理量
Exact physical quantities of a competing spin chain in the thermodynamic limit
论文作者
论文摘要
我们研究了竞争性自旋链的确切物理量，其中包含许多有趣且有意义的耦合，包括最近的邻居，下一个最近的邻居，手性三旋，Dzyloshinsky-Moriya相互作用以及热力学极限中的无与伦比的边界磁场。我们在模型参数的不同状态下获得了零根，表面能和基本激发的密度。由于各种相互作用的竞争，表面能量和激发频谱显示出与海森伯格自旋链的图片许多不同的图片。
We study the exact physical quantities of a competing spin chain which contains many interesting and meaningful couplings including the nearest neighbor, next nearest neighbor, chiral three spins, Dzyloshinsky-Moriya interactions and unparallel boundary magnetic fields in the thermodynamic limit. We obtain the density of zero roots, surface energies and elementary excitations in different regimes of model parameters. Due to the competition of various interactions, the surface energy and excited spectrum show many different pictures from those of the Heisenberg spin chain.
