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Title: Entanglement and discord in spin glass
Authors: Koh, C.Y.
Kwek, L.C. 
Wang, S.T.
Chong, Y.Q.
Issue Date: Feb-2013
Source: Koh, C.Y.,Kwek, L.C.,Wang, S.T.,Chong, Y.Q. (2013-02). Entanglement and discord in spin glass. Laser Physics 23 (2) : -. ScholarBank@NUS Repository.
Abstract: We study entanglement and discord in spin glass. By using the Edwards-Anderson XX model, we consider the Hamiltonian for three and four 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 three particles is plotted as a function of temperature T. © 2013 Astro Ltd.
Source Title: Laser Physics
ISSN: 1054660X
DOI: 2/025202
Appears in Collections:Staff Publications

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