Global entanglement measures and quantum phase transitions in the 1D J 1-J 2 model

Eryiǧit R.

International Journal of Theoretical Physics, cilt.48, sa.3, ss.885-893, 2009 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 3
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1007/s10773-008-9861-4
  • Dergi Adı: International Journal of Theoretical Physics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.885-893
  • Anahtar Kelimeler: Global entanglement, J 1-J 2 model, Quantum phase transitions
  • Ankara Üniversitesi Adresli: Hayır

Özet

We have analyzed the behavior of multipartite global entanglement and average bipartite concurrence for the sign of quantum phase transitions in the frustrated J 1-J 2 model by using exact diagonalization technique for a chain of 12 qubits. It is found that although the magnitude of two classes of the measures show opposite trends the absolute value of their derivatives show similar structure near critical points. © 2008 Springer Science+Business Media, LLC.