dorsal/arxiv
View SchemaEntanglement in the One-dimensional Kondo Necklace Model
| Authors | A. Saguia, M. S. Sarandy |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0208133 |
| URL | https://arxiv.org/abs/quant-ph/0208133 |
| DOI | 10.1103/PhysRevA.67.012315 |
| Journal | Phys. Rev. A 67, 012315 (2003) |
Abstract
We discuss the thermal and magnetic entanglement in the one-dimensional Kondo necklace model. Firstly, we show how the entanglement naturally present at zero temperature is distributed among pairs of spins according to the strength of the two couplings of the chain, namely, the Kondo exchange interaction and the hopping energy. The effect of the temperature and the presence of an external magnetic field is then investigated, being discussed the adjustment of these variables in order to control the entanglement available in the system. In particular, it is indicated the existence of a critical magnetic field above which the entanglement undergoes a sharp variation, leading the ground state to a completely unentangled phase.
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"abstract": "We discuss the thermal and magnetic entanglement in the one-dimensional Kondo\nnecklace model. Firstly, we show how the entanglement naturally present at zero\ntemperature is distributed among pairs of spins according to the strength of\nthe two couplings of the chain, namely, the Kondo exchange interaction and the\nhopping energy. The effect of the temperature and the presence of an external\nmagnetic field is then investigated, being discussed the adjustment of these\nvariables in order to control the entanglement available in the system. In\nparticular, it is indicated the existence of a critical magnetic field above\nwhich the entanglement undergoes a sharp variation, leading the ground state to\na completely unentangled phase.",
"arxiv_id": "quant-ph/0208133",
"authors": [
"A. Saguia",
"M. S. Sarandy"
],
"categories": [
"quant-ph",
"cond-mat"
],
"doi": "10.1103/PhysRevA.67.012315",
"journal_ref": "Phys. Rev. A 67, 012315 (2003)",
"title": "Entanglement in the One-dimensional Kondo Necklace Model",
"url": "https://arxiv.org/abs/quant-ph/0208133"
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