Author(s): Yong Xu, Sheng-Tao Wang, and L.-M. Duan
A new topological gapless ring of nondegenerate states, characterized by both a quantized Chern number and a quantized Berry phase, is predicted to occur in 3D dissipative systems.
[Phys. Rev. Lett. 118, 045701] Published Fri Jan 27, 2017