Quantum entanglement, local indicators and effect of external fields in the Kugel-Khomskii model

V. E. Valiulin, A. V. Mikheyenkov, N. M. Chtchelkatchev +1

Using the exact diagonalization technique, we determine the energy spectrum and wave functions for finite chains described by the two-spin (Kugel--Khomskii) model with different ty…