https://ujcontent.uj.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Entanglement and energy level crossing of spin and Fermi Hamilton operators https://ujcontent.uj.ac.za/vital/access/manager/Repository/uj:7682 Thu 22 Aug 2019 18:36:36 SAST ]]> Spin Hamilton operators, symmetry breaking, energy level crossing and entanglement https://ujcontent.uj.ac.za/vital/access/manager/Repository/uj:5975 Thu 22 Aug 2019 15:39:48 SAST ]]>