Wang, Ting; Wang, Xiaoguang; Sun, Zhe - In: Physica A: Statistical Mechanics and its Applications 383 (2007) 2, pp. 316-324
We study pairwise entanglements in spin-half and spin-one Heisenberg chains with an open boundary condition, respectively. We find out that the ground-state and the first-excited-state entanglements are equal for the three-site spin-one chain. When the number of sites L3, the concurrences and...