Thermal Spin Squeezing as a Signature of Thermal Global Entanglement in Heisenberg Models |
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| Authors: | Mojtaba Jafarpour Azita Naji |
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| Affiliation: | Physics Department, Shahid Chamran University, Ahvaz, Iran |
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| Abstract: | We study thermal spin squeezing (TSS) and thermal global entanglement (TGE) in a general Heisenberg spin chain, in the presence of Dzyaloshinskii-Moriya interaction and an external magnetic field. We derive an inequality associating the squeezing parameter and the global concurrence, which establishes (TSS) as a signature of (TGE). The inequality reduces to equality for particular symmetric chains which also associates TSS with bipartite entanglement in such systems. We also check the results by presenting two numerical examples. |
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| Keywords: | thermal spin squeezing thermal global entanglement Heisenberg model global concurrence |
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