First envisioned by Russian physicist Lev Landau in the 1950s, a triangle singularity refers to a rare subatomic process where particles exchange identities before flying away from each other.

He calls his scheme the “double simplex” representation, because the left-handed and right-handed particles of nature each form a simplex — a generalization of a triangle ... A quark can have either ...

(Nanowerk News) A research team has discovered that achiral hard banana-shaped particles can spontaneously ... the team noted that a blue phase III may emerge. These are characterized by a 3D network ...