Abstract
The thermal behavior of the quantum correlations in a three-qubit Ising model with added Dzyaloshinskii–Moriya (DM) interaction is studied. Quantum correlations are calculated in the three-qubit system through symmetric (SY) and nonsymmetric (NYS) ways. In particular, the study is focused on the concurrence (C) and the quantum discord (QD). Intriguing results are found by comparing the finite-temperature results with the ground-state results. Especially, an opposite trend of the ground state QD and C through both SY and NSY ways is found. The thermal behavior of the C (TC) through the SY way is shown to be a robust trend against thermal fluctuations. Two kinds of zero and nonzero plateau behavior in the thermal QD curve are also found. The width of the QD plateau is calculated, and it is found that it scales as D e , where the critical exponent varies from e=0.5 in the antiferromagnetic case to e=−0.6 in the ferromagnetic case.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
