Topological 1-soliton solution of the Biswas-Milovic equation with power law nonlinearity

This paper studies the topological or dark solitons due to the Biswas-Milovic equation with power law nonlinearity. The coefficients of the dispersion and nonlinearity terms are time dependent. The damping (gain) term with time-dependent coefficient is also taken into consideration. The solitary wave ansatz is used to carry out the integration. The only requirement is that the coefficient of the damping term is Riemann integrable. (C) 2009 Elsevier Ltd. All rights reserved.