A study and comparison of entanglement dynamics for a W state in the presence of a magnetic field and DM interaction

Document Type : Full length research Paper




In this research we study the dynamics of a W state, instigated by the four Heisenberg Hamitonian models XX, Ising, XXZ and XXX analytically and also investigate the effect of the DM interaction and the magnetic field on the entanglement dynamics of the end qubits. It is observed that the application of a magnetic field on the whole system does not affect the entanglement; however, application of the field to single qubits does change the entanglement and sometimes may intensify the latter. Also it is revealed that the DM interaction does affect the entanglement and diminishes the latter for all the above-mentioned Hamiltonians.


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