dorsal/arxiv
View SchemaEntanglement and Entropy in a Spin-Boson Quantum Phase Transition
| Authors | N. Lambert, C. Emary, T. Brandes |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0405109 |
| URL | https://arxiv.org/abs/quant-ph/0405109 |
| DOI | 10.1103/PhysRevA.71.053804 |
| Journal | Phys. Rev. A 71, 053804 (2005) |
Abstract
We investigate the entanglement properties of an ensemble of atoms interacting with a single bosonic field mode via the Dicke (superradiance) Hamiltonian. The model exhibits a quantum phase transition and a well-understood thermodynamic limit, allowing the identification of both quantum and semi-classical many-body features in the behaviour of the entanglement. We consider the entanglement between the atoms and the field, an investigation initiated in [N. Lambert, C. Emary and T. Brandes, Phys. Rev. Lett. {\bf 92}, %073602 (2004)]. In the thermodynamic limit, we give exact results for all entanglement partitions and observe a logarithmic divergence of the atom-field entanglement, and discontinuities in the average linear entropy.
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"abstract": "We investigate the entanglement properties of an ensemble of atoms\ninteracting with a single bosonic field mode via the Dicke (superradiance)\nHamiltonian. The model exhibits a quantum phase transition and a\nwell-understood thermodynamic limit, allowing the identification of both\nquantum and semi-classical many-body features in the behaviour of the\nentanglement. We consider the entanglement between the atoms and the field, an\ninvestigation initiated in [N. Lambert, C. Emary and T. Brandes, Phys. Rev.\nLett. {\\bf 92}, %073602 (2004)]. In the thermodynamic limit, we give exact\nresults for all entanglement partitions and observe a logarithmic divergence of\nthe atom-field entanglement, and discontinuities in the average linear entropy.",
"arxiv_id": "quant-ph/0405109",
"authors": [
"N. Lambert",
"C. Emary",
"T. Brandes"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.053804",
"journal_ref": "Phys. Rev. A 71, 053804 (2005)",
"title": "Entanglement and Entropy in a Spin-Boson Quantum Phase Transition",
"url": "https://arxiv.org/abs/quant-ph/0405109"
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