Dynamics of quantum entanglement in three-spin system with cluster interaction
الموضوعات : Journal of Theoretical and Applied Physics
Zahra Noorinejad
1
(Department of Physics, Science and Research Branch, Islamic Azad University, Tehran, Iran)
Mohammadreza Abolhassani
2
(Department of Physics, Science and Research Branch, Islamic Azad University, Tehran, Iran)
Saeed Mahdavifar
3
(Department of Physics, University of Guilan)
Mansoure Ilkhani
4
(Department of Physics, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran)
الکلمات المفتاحية: quantum entanglement, concurrence, three-spin interaction, cluster interaction, critical point,
ملخص المقالة :
The present paper investigates the spin- XX model with three-spin interaction (TSI) from a view point of bipartite entanglement. The three-spin system is initially chosen by well-known W entangled state. By analyzing the time-dependency of the concurrence between the nearest and the next-nearest neighbor pair of spins, we show that where the quantum phase transition (QPT) of the infinite-size system might happen can be observed, even from short-time dynamics of such a finite spin system.
