RIKEN Nishina Center

An orbifold framework for classifying layer groups with an application to knitted fabrics

Abstract Entangled structures, such as textiles and architected materials, are often doubly periodic. Owing to this property and their finite transverse thickness, the symmetries of these materials are described by the crystallographic layer groups. While orbifold notation provid...

Concurrence in Neutron–Proton Scattering for Polarization-Induced Mixed States

We investigate spin entanglement generated in neutron–proton scattering by evaluating the concurrence from the scattered two-nucleon density matrix. While previous studies mainly discussed pure initial spin states, the present work extends the analysis to polarization-induced mix...