Bragg gap solitons in $\mathcal{P}\mathcal{T}$ symmetric lattices with competing nonlinearity

Shuang Liu, Caiwen Ma, Yiqi Zhang +1

The effect of competing nonlinearity on beam dynamics in parity-time $(\mathcal{P}\mathcal{T})$ symmetric potentials is investigated. By using numerical methods, the existence of gap soliton…