Oscillatory stability of quantum droplets in $\text{}{ \mathcal P }{ \mathcal T }$-symmetric optical lattice

Jiehong Lao,Zheng Zhou,Xili Zhang,Fuqiu Ye,Honghua Zhong

Figure 4. Typical examples of density plots for collisions between two ${ \mathcal P }{ \mathcal T }$-symmetric QDs in ${ \mathcal P }{ \mathcal T }$-symmetric optical lattices, launched as per equation (6) with x0 = 64. (a) N1 = 2, N2 = 8, k = 0.1, g = 1; (b) N1 = 2, N2 = 8, k = 2, g = 1; (c) N1 = 4, N2 = 5.5, k = 0.1, g = 1; (d) N1 = 4, N2 = 4, k = 0.1, g1 = 0.57, g2 = 0.8. The other parameters are set as V0 = 0.3 and W0 = 0.05.