dorsal/arxiv
View SchemaThermal entanglement of spins in mean-field clusters
| Authors | M. Asoudeh, V. Karimipour |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0604031 |
| URL | https://arxiv.org/abs/quant-ph/0604031 |
| DOI | 10.1103/PhysRevA.73.062109 |
| Journal | Physical Review A 73, 062109 (2006) |
Abstract
We determine thermal entanglement in mean field clusters of $N$ spin one-half particles interacting via the anisotropic Heisenberg interaction, with and without external magnetic field. For the $xxx$ cluster in the absence of magnetic field we prove that only the N=2 ferromagnetic cluster shows entanglement. An external magnetic field $B$ can only entangle $xxx$ anti-ferromagnetic clusters in certain regions of the $B-T$ plane. On the other hand, the $xxz$ clusters of size $N>2$ are entangled only when the interaction is ferromagnetic. Detailed dependence of the entanglement on various parameters is investigated in each case.
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"abstract": "We determine thermal entanglement in mean field clusters of $N$ spin one-half\nparticles interacting via the anisotropic Heisenberg interaction, with and\nwithout external magnetic field. For the $xxx$ cluster in the absence of\nmagnetic field we prove that only the N=2 ferromagnetic cluster shows\nentanglement. An external magnetic field $B$ can only entangle $xxx$\nanti-ferromagnetic clusters in certain regions of the $B-T$ plane. On the other\nhand, the $xxz$ clusters of size $N\u003e2$ are entangled only when the interaction\nis ferromagnetic. Detailed dependence of the entanglement on various parameters\nis investigated in each case.",
"arxiv_id": "quant-ph/0604031",
"authors": [
"M. Asoudeh",
"V. Karimipour"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.73.062109",
"journal_ref": "Physical Review A 73, 062109 (2006)",
"title": "Thermal entanglement of spins in mean-field clusters",
"url": "https://arxiv.org/abs/quant-ph/0604031"
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