Quantum Separability of Thermal Spin One Boson Systems
arXiv:quant-ph/0510137 · doi:10.1016/j.physleta.2006.11.037
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.
References & comments related to AQFT added. no figure, revtex4, to be published in Phys. Lett. A
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