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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access January 8, 2009

Average entanglement of spin 1 and 1/2 pair

Guo-Qiang Zhu
From the journal Open Physics


We study the entanglement features of the ground state of a system composed of spin 1 and 1/2 parts. In the light of the ground state degeneracy, the notion of average entanglement is used to measure the entanglement of the Hilbert subspace. The entanglement properties of both a general superposition as well as the mixture of the degenerate ground states are discussed by means of average entanglement and the negativity respectively.

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Published Online: 2009-1-8
Published in Print: 2009-3-1

© 2009 Versita Warsaw

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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