Scaling of entanglement at a quantum phase transition for a two-dimensional array of quantum dots

Jiaxiang Wang and Sabre Kais
Phys. Rev. A 70, 022301 – Published 4 August 2004

Abstract

Using the Hubbard model, the entanglement scaling behavior in a two-dimensional itinerant system is investigated. It has been found that, on the two sides of the critical point denoting an inherent quantum phase transition (QPT), the entanglement follows different scalings with the size, just as an order parameter does. This fact reveals the subtle role played by the entanglement in QPT as a fungible physical resource.

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  • Received 19 November 2003

DOI:https://doi.org/10.1103/PhysRevA.70.022301

©2004 American Physical Society

Authors & Affiliations

Jiaxiang Wang and Sabre Kais

  • Chemistry Department, Purdue University, West Lafayette, Indiana 47907, USA

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Issue

Vol. 70, Iss. 2 — August 2004

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