2014/10/25 by Jia-Min Gong, Qi Tang, Yuhang Sun +2
Computer Science · Engineering · Mathematics · Physics and Astronomy · #Chain (unit) #Condensed matter physics #Engineering #Hellinger distance #Limiting #Magnetic field #Mathematical physics #Mathematics #Maxima #Physics #Quantum #Quantum Information and Cryptography #Quantum dot #Quantum mechanics #Quantum optics and atomic interactions #Spin (aerodynamics) #Statistics #Strong Light-Matter Interactions #Thermodynamics #quant-ph
paper · pdf · doi:10.1016/j.physb.2014.12.017
6 pages, 4 figures
arxiv created 2014/10/25 · openalex publication_date 2014/12/24 · arxiv updated 2016/05/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We studied the trance distance, the Hellinger distance, and the Bures distance geometric quantum discords (GQDs) for a two-spin Heisenberg \it XX chain with the Dzyaloshinsky-Moriya (DM) interaction and the external magnetic fields. We found that considerable enhancement of the GQDs can be achieved by introducing the DM interaction, and their maxima were obtained in the limiting case D→ ∞. The external magnetic fields and the increase of the temperature can also enhance the GQDs to some extent for certain special cases.