2006/04/13 by Xiaoguang Wang, Z. D. Wang
Computer Science · Physics and Astronomy · #Condensed matter physics #Ferrimagnetism #Magnetic field #Magnetization #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum entanglement #Quantum many-body systems #Quantum mechanics #Spin (aerodynamics) #Thermal #Thermodynamics #quant-ph
paper · pdf · doi:10.1103/physreva.73.064302
published as Phys. Rev. A73, 064302(2006) · 4 pages, 3 figures
arxiv created 2006/04/13 · openalex publication_date 2006/06/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A formula to evaluate the entanglement in a one-dimensional ferrimagnetic system is derived. Based on the formula, we find that the thermal entanglement in a small size spin-1∕2 and spin-s ferrimagnetic chain is rather robust against temperature, and the threshold temperature may be arbitrarily high when s is sufficiently large. This intriguing result answers unambiguously a fundamental question: ``Can entanglement and quantum behavior in physical systems survive at arbitrary high temperatures?''