Macroscopic inequivalent entanglement witness in Heisenberg spin chain
张婷, 陈平形, 李承祖
Macroscopic inequivalent entanglement witness in Heisenberg spin chain
Zhang Ting(张婷), Chen Ping-Xing(陈平形), and Li Cheng-Zu(李承祖)
中国物理B . 2009, (4): 1346 -1351 .  DOI: 10.1088/1674-1056/18/4/010