Bose–Einstein condensates in an eightfold symmetric optical lattice
Niu Zhen-Xia1, Tai Yong-Hang2, Shi Jun-Sheng2, Zhang Wei1, 3, †
       

Matter-wave interference patterns of BECs released from a combined potential of OL and harmonic trap for (a) a 2D cubic OL with ε1 = ε3 = 1 and ε2 = ε4 = 0, and (b) a quasi-periodic OL with εi = 1. Other parameters used in this figure are V0′=−0.2 , g = 10, ωr′=0.08 , and Ω = 0.