Dromion structures in the (2+1)(2+1)-dimensional nonlinear Schrödinger equation with a parity-time-symmetric potential

In this paper, the (2+1)(2+1)-dimensional variable-coefficient nonlinear Schrödinger equation with a parity-time-symmetric potential UPT(r,φ)UPT(r,φ) is investigated. With the separation of variables, the solutions for that equation are obtained. Via the obtained solutions, some dromion structures are derived with corresponding parameters, and the influences of them (especial parity-time-symmetry) are analyzed and studied. Results show that the parity-time-symmetric potential plays an important role for obtaining dromion structures.