Spin–spin correlations and entanglement in elastic electron scattering from hydrogen atoms. (31st October 2017)

• Record Type: Journal Article
• Authors: Bartschat, Klaus
• Is Part Of: Journal of physics. Volume 50:Number 22(2017:Nov. 15)
• Publication Date: 2017-10-31
• Subjects: elastic scattering -- spin entanglement -- Bell correlations; 32.80.Fb -- 32.80.Rm -- 32.10.Dk; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/aa8c8b
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: In two recent papers, Blum and Lohmann (2016 Phys. Rev. Lett. 116 033201) and Lohmann et al (2016 Phys. Rev. A 94 032331), the possibility of continuously varying the degree of entanglement between an elastically scattered electron and the valence electron of quasi-one electron targets was discussed. Here we present results for elastic electron scattering from atomic hydrogen in the energy regime of 1−10 eV and the full range of scattering angles 0 ° − 180 ° . We confirm previous calculations at very low energies, which predicted that the hydrogen target is not a promising candidate for Bell correlations through electron collisions. This finding remains unchanged in the near-resonance regime of incident electron energies just below 10 eV. In addition to the spin-correlation parameter P, we present the angle-integrated total cross section, as well as the angle-differential cross section at a few representative collision energies.