Crystallization of C*-algebras

Marcelo Laca, Sergey Neshveyev, Makoto Yamashita

Given a C${}^{\ast }$-algebra $A$ with an almost periodic time evolution $\sigma$, we define a new C${}^{\ast }$-algebra $A_c$, which we call the crystal of $(A,\sigma )$, that represents the zero temperatur…