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Quantum Separability of Thermal Spin One Boson Systems

Jae-Weon Lee·Sangchul Oh·Jaewan Kim
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Abstract

Using the temperature Green's function approach we investigate entanglement between two non-interacting spin 1 bosons in thermal equilibrium. We show that, contrary to the fermion case, the entanglement is absent in the spin density matrix. Separability is demonstrated using the Peres-Horodecki criterion for massless particles such as photons in black body radiation. For massive particles, we show that the density matrix can be decomposed with separable states.

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Jae-Weon Lee, Sangchul Oh, Jaewan Kim. 2006-11-17. Quantum Separability of Thermal Spin One Boson Systems. https://doi.org/10.1016/j.physleta.2006.11.037

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