Dynamics of quantum entanglement in three-spin system with cluster interaction

الموضوعات : Journal of Theoretical and Applied Physics

Zahra Noorinejad ¹ , Mohammadreza Abolhassani ² , Saeed Mahdavifar ³ , Mansoure Ilkhani ⁴

1 - Department of Physics, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 - Department of Physics, Science and Research Branch, Islamic Azad University, Tehran, Iran
3 - Department of Physics, University of Guilan
4 - Department of Physics, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran

تاريخ الإرسال : 20 الأحد , ذو القعدة, 1443 تاريخ التأكيد : 13 الثلاثاء , ذو الحجة, 1443 تاريخ الإصدار : 05 الخميس , صفر, 1444

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.