Quantum Separability of Thermal Spin One Boson Systems

Details Quantum Separability of Thermal Spin One Boson Systems Quantum Separability of Thermal Spin One Boson Systems

2005-10-18

arxiv.org/abs/quant-ph/0510137v4

Phys. Lett. A, 363,374 (2007)

Physics

Quantum Physics

References & comments related to AQFT added. no figure, revtex4, to be published in Phys. Lett. A

Scientific paper

10.1016/j.physleta.2006.11.037

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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