2009/10/31 by D. Giuliano, D Giuliano, A. Sindona +7 · 1 citation
Computer Science · Physics and Astronomy · #Degrees of freedom (physics and chemistry) #Ground state #Inverse #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum entanglement #Quantum many-body systems #Spinon #Spins #Square (algebra) #cond-mat.mtrl-sci #cond-mat.str-el #quant-ph
paper · pdf · doi:10.1088/1367-2630/12/2/025022
published as New J. Phys. 12 (2010) 025021 · 11 pages, 7 eps figures. Submitted to New. J. Phys, special issue "Quantum Information and Many-Body Theory"(co-edited by J Eisert and M Plenio)
openalex publication_date 2010/02/26 · arxiv created 2010/03/02 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate the entanglement content of the ground state of a system characterized by effective elementary degrees of freedom with fractional statistics. To this end, we explicitly construct the ground state for a chain of N spins with inverse square interaction (the Haldane–Shastry model) in the presence of an external uniform magnetic field. For such a system at zero temperature, we evaluate the entanglement in the ground state both at finite size and in the thermodynamic limit. We relate the behavior of the quantum correlations with the spinon condensation phenomenon occurring at the saturation field.