Entanglement of the Heisenberg chain with the next-nearest-neighbor interaction
Entanglement of the Heisenberg chain with the next-nearest-neighbor interaction
The features of the concurrences of the nearest-neighbor and the next-nearest-neighbor sites for one-dimensional Heisenberg model with the next-nearest-neighbor interaction are studied both at the ground state and finite temperatures respectively. Both concurrences are found to exhibit different behaviors at the ground state, which is clarified from the point of …