Thermodynamics of the One-Dimensional SU(4) Symmetric Spin-Orbital Model
Thermodynamics of the One-Dimensional SU(4) Symmetric Spin-Orbital Model
The ground-state properties and thermodynamics of the one-dimensional SU(4) symmetric spin system with orbital degeneracy are investigated using the quantum Monte Carlo loop algorithm. The spin-spin correlation functions exhibit a 4-site periodicity, and their low-temperature behavior is controlled by two correlation lengths that diverge like the inverse temperature, while the …