1. Tutorial for calculations at zero temperature

• 1.1. Spin 1/2 Dimer
  • 1.1.1. Check the energy
  • 1.1.2. Check S dependence
  • 1.1.3. Add magnetic field H
  • 1.1.4. Try to use Lanczos method
  • 1.1.5. Try to use LOBCG method
• 1.2. Hubbard Dimer
  • 1.2.1. Check the energy
  • 1.2.2. Try to use LOBCG method
• 1.3. Hubbard Trimer
  • 1.3.1. Ferromagnetic ground state
  • 1.3.2. Effects of transfer integrals
• 1.4. Heisenberg chain (zero temperature)
  • 1.4.1. Check the energy
  • 1.4.2. Obtaining the excited state
  • 1.4.3. Size dependence of the spin gap
  • 1.4.4. Haldane gap
• 1.5. J1-J2 Heisenberg model
  • 1.5.1. Calculations of spin structure factors for ground state
  • 1.5.2. Calculations of spin structure factors for excited states
• 1.6. How to use Expert mode
  • 1.6.1. Exercise
• 1.7. Use eigenvectors
  • 1.7.1. Exercise