Entanglement of electron spins of noninteracting electron gases

Sangchul Oh, Jaewan Kim

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Abstract

Based on the Green's function approach, the entanglement of electron spins in many-body systems was investigated. The two-particle density matrix of a noninteracting electron gas is analyzed and its two-spin density matrix as a Werner state was identified. Entanglement measurements, a classical correlation, mutual information, and a pair distribution function of two electrons at zero and finite temperatures was calculated. The changes of entanglement measures were found to be proportional to T2 at low temperatures.

Original languageEnglish
Article number054305
Pages (from-to)054305-1-054305-4
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume69
Issue number5 B
DOIs
Publication statusPublished - May 2004

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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