{"paper":{"title":"$SU(2) \\otimes SU(2)$ bi-spinor structure entanglement induced by a step potential barrier scattering in two-dimensions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"quant-ph","authors_text":"Alex E. Bernardini, Salomon S. Mizrahi, Victor A. S. V. Bittencourt","submitted_at":"2015-01-07T21:52:26Z","abstract_excerpt":"The entanglement between $SU(2) \\otimes SU(2)$ internal degrees of freedom of parity and helicity for reflected and transmitted waves of Dirac-like particles scattered by a potential step along an arbitrary direction on the $x-y$ plane is quantified. Diffusion ($E \\geq V$) and Klein zone ($V \\geq E$) energy regimes are considered. It has been shown that, for $SU(2) \\otimes SU(2)$ polarized structures of helicity eigenstates impinging the barrier, the local interaction with a {\\em step} potential destroys the {\\em parity-spin} separability. The framework presented here can be straightforwardly "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.01660","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}