dorsal/arxiv
View SchemaBlock-block entanglement and quantum phase transitions in one-dimensional extended Hubbard model
| Authors | Shu-Sa Deng, Shi-Jian Gu, Hai-Qing Lin |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0511103 |
| URL | https://arxiv.org/abs/quant-ph/0511103 |
| DOI | 10.1103/PhysRevB.74.045103 |
| Journal | S. S. Deng, S. J. Gu, and H. Q. Lin, Phys. Rev. B 74, 045103 (2006). |
Abstract
In this paper, we study block-block entanglement in the ground state of one-dimensional extended Hubbard model. Our results show that the phase diagram derived from the block-block entanglement manifests richer structure than that of the local (single site) entanglement because it comprises nonlocal correlation. Besides phases characterized by the charge-density-wave, the spin-density-wave, and phase-separation, which can be sketched out by the local entanglement, singlet superconductivity phase could be identified on the contour map of the block-block entanglement. Scaling analysis shows that ${\rm log}_2(l)$ behavior of the block-block entanglement may exist in both non-critical and the critical regions, while some local extremum are induced by the finite-size effect. We also study the block-block entanglement defined in the momentum space and discuss its relation to the phase transition from singlet superconducting state to the charge-density-wave state.
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"abstract": "In this paper, we study block-block entanglement in the ground state of\none-dimensional extended Hubbard model. Our results show that the phase diagram\nderived from the block-block entanglement manifests richer structure than that\nof the local (single site) entanglement because it comprises nonlocal\ncorrelation. Besides phases characterized by the charge-density-wave, the\nspin-density-wave, and phase-separation, which can be sketched out by the local\nentanglement, singlet superconductivity phase could be identified on the\ncontour map of the block-block entanglement. Scaling analysis shows that ${\\rm\nlog}_2(l)$ behavior of the block-block entanglement may exist in both\nnon-critical and the critical regions, while some local extremum are induced by\nthe finite-size effect. We also study the block-block entanglement defined in\nthe momentum space and discuss its relation to the phase transition from\nsinglet superconducting state to the charge-density-wave state.",
"arxiv_id": "quant-ph/0511103",
"authors": [
"Shu-Sa Deng",
"Shi-Jian Gu",
"Hai-Qing Lin"
],
"categories": [
"quant-ph",
"cond-mat.str-el"
],
"doi": "10.1103/PhysRevB.74.045103",
"journal_ref": "S. S. Deng, S. J. Gu, and H. Q. Lin, Phys. Rev. B 74, 045103\n (2006).",
"title": "Block-block entanglement and quantum phase transitions in one-dimensional extended Hubbard model",
"url": "https://arxiv.org/abs/quant-ph/0511103"
},
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