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arXiv · 1002.2893

Entanglement for all quantum states

A. C. de la Torre·D. Goyeneche·L. Leitao
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Abstract

It is shown that a state that is factorizable in the Hilbert space corresponding to some choice of degrees of freedom, becomes entangled for a different choice of degrees of freedom. Therefore, entanglement is not a special case but is ubiquitous in quantum systems. Simple examples are calculated and a general proof is provided. The physical relevance of the change of tensor product structure is mentioned.

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A. C. de la Torre, D. Goyeneche, L. Leitao. 2010-02-15. Entanglement for all quantum states. https://doi.org/10.1088/0143-0807%2F31%2F2%2F010

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