Understanding entangled spins in QED

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dc.creatorWanng, Hai-Jhun
dc.creatorGeng, W. T.
dc.date2005-10-03
dc.date2006-10-08
dc.date.accessioned2026-07-07T08:27:38Z
dc.date.available2026-07-07T08:27:38Z
dc.descriptionThe stability of two entangled spins dressed by electrons is studied by calculating the scattering phase shifts. The interaction between electrons is interpreted by fully relativistic QED and the screening effect is described phenomenologically in the Debye exponential form $e^{-αr}$. Our results show that if the (Einstein-Podolsky-Rosen-) EPR-type states are kept stable under the interaction of QED, the spatial wave function must be parity-dependent. The spin-singlet state $s=0$ and the polarized state $\frac 1{\sqrt{2}}(\mid +-> -\mid -+>)$ along the z-axis\QTR{bf}{\}give rise to two different kinds of phase shifts\QTR{bf}{.} Interestingly, the interaction between electrons in the spin-singlet pair is found to be attractive. Such an attraction could be very useful when we extract the entangled spins from superconductors. A mechanism to filter the entangled spins is also discussed.
dc.description6 pages, 3 figures. changes added
dc.identifierhttps://arxiv.org/abs/quant-ph/0510016
dc.identifierhttp://arxiv.org/abs/quant-ph/0510016
dc.identifierJ. Phys. A: Math. Theor. 40 (2007) 11617-11625
dc.identifierdoi:10.1088/1751-8113/40/38/012
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/137340
dc.subjectQuantum Physics
dc.subjectStrongly Correlated Electrons
dc.titleUnderstanding entangled spins in QED
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