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Entanglement witness for spin glass
Citation
Koh, C. Y., & Kwek, L. C. (2015). Entanglement witness for spin glass. Physica A: Statistical Mechanics and its Applications, 420, 324-330. https://doi.org/10.1016/j.physa.2014.11.004
Abstract
We derived the entanglement witness (EW) in Ising model for both the magnetic susceptibility and specifi c heat capacity of a spin glass. The magnetic susceptibility EW curve for LiHoxY1-xF4 is formulated and compared with the existing data of LiHo0:167Y0:833F4 to identify the entangled and unentangled regions. The EW for the magnetic susceptibility was found to cut the cusp of the experimental result at a critical temperature of about 0.2669 K. The speci fic heat capacity EW curve for CuxMn is formulated and compared with the existing data of Cu0:279Mn to identify the entangled and unentangled region for the various applied magnetic field B. With increasing B, the critical temperature where the EW curve intersects the experimental
data, increases as well.
Date Issued
2015
Publisher
Elsevier
Journal
Physica A: Statistical Mechanics and its Applications