dorsal/arxiv
View SchemaMacroscopic Entanglement and Phase Transitions
| Authors | Janet Anders, Vlatko Vedral |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0610268 |
| URL | https://arxiv.org/abs/quant-ph/0610268 |
| DOI | 10.1007/s11080-007-9034-6 |
| Journal | Open Systems & Information Dynamics, 14:1 (2007) |
Abstract
This paper summarises the results of our research on macroscopic entanglement in spin systems and free Bosonic gases. We explain how entanglement can be observed using entanglement witnesses which are themselves constructed within the framework of thermodynamics and thus macroscopic observables. These thermodynamical entanglement witnesses result in bounds on macroscopic parameters of the system, such as the temperature, the energy or the susceptibility, below which entanglement must be present. The derived bounds indicate a relationship between the occurrence of entanglement and the establishment of order, possibly resulting in phase transition phenomena. We give a short overview over the concepts developed in condensed matter physics to capture the characteristics of phase transitions in particular in terms of order and correlation functions. Finally we want to ask and speculate whether entanglement could be a generalised order concept by itself, relevant in (quantum induced) phase transitions such as BEC, and that taking this view may help us to understand the underlying process of high-T superconductivity.
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"abstract": "This paper summarises the results of our research on macroscopic entanglement\nin spin systems and free Bosonic gases. We explain how entanglement can be\nobserved using entanglement witnesses which are themselves constructed within\nthe framework of thermodynamics and thus macroscopic observables. These\nthermodynamical entanglement witnesses result in bounds on macroscopic\nparameters of the system, such as the temperature, the energy or the\nsusceptibility, below which entanglement must be present. The derived bounds\nindicate a relationship between the occurrence of entanglement and the\nestablishment of order, possibly resulting in phase transition phenomena. We\ngive a short overview over the concepts developed in condensed matter physics\nto capture the characteristics of phase transitions in particular in terms of\norder and correlation functions. Finally we want to ask and speculate whether\nentanglement could be a generalised order concept by itself, relevant in\n(quantum induced) phase transitions such as BEC, and that taking this view may\nhelp us to understand the underlying process of high-T superconductivity.",
"arxiv_id": "quant-ph/0610268",
"authors": [
"Janet Anders",
"Vlatko Vedral"
],
"categories": [
"quant-ph"
],
"doi": "10.1007/s11080-007-9034-6",
"journal_ref": "Open Systems \u0026 Information Dynamics, 14:1 (2007)",
"title": "Macroscopic Entanglement and Phase Transitions",
"url": "https://arxiv.org/abs/quant-ph/0610268"
},
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