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Title: Entanglement and discord in spin glass
Authors: Koh, Chee Yeong
Kwek, Leong Chuan
Wang, S. T.
Chong, Y. Q.
Issue Date: 2013
Citation: Koh, C. Y., Kwek, L. C., Wang, S. T., & Chong, Y. Q. (2013). Entanglement and discord in spin glass. Laser Physics, 23(2): 025202.
Abstract: We study the entanglement and discord in spin glass. By using the Edwards-Anderson XX model, we consider the Hamiltonian for 3 and 4 particles for nearest neighbor and next nearest neighbor interactions and to solve for the entanglement through concurrence. With a fixed mean and changing variances for the coupling J, the concurrence and discord are numerically plotted against the temperature. For J = 1, the critical temperature is found to be 2.106. The entanglement was found to increase beyond the critical temperature as the variance increases. The spin-spin correlation for 3 particles is plotted as a function of temperature T.
Description: This is the final draft, after peer-review, of a manuscript published in Laser Physics. The published version is available online at
ISSN: 1054-660X (print)
1555-6611 (online)
Other Identifiers: 10.1088/1054-660X/23/2/025202
Appears in Collections:Journal Articles

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