2019-07-27 J1-J2 model

1. 有限N=4:2:12，T=0, g=[0:0.02:1]
   能谱
   S~g

2. 有限N=4:2:12，T=0.01, g=[0:0.02:1]
   S~g

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2. 有限N=2:2:12，T=0.05, g=[0:0.1:1]
   Concurrence~g
   目的是为Thermal Network提供验证

3. 有限N=12, T=[0.01:0.1:1], g=[0 0.2 0.4 0.6 0.8 1.0 1.2]
   S~T

4. 无限大系统

文献阅读======

关于基态简并的处理
原文

• Dimerization and incommensurate spiral spin correlations in the zigzag spin chain: Analogies to the Kondo lattice
• Steven R. White and Ian Affleck
• Phys. Rev. B 54, 9862 – Published 1 October 1996

Screenshot from 2019-07-29 14-32-27.png Screenshot from 2019-07-29 14-33-05.png

• spin operator