Dissipation-Managed Bright Soliton in a 1D Bose-Einstein Condensate in an Optical-Lattice Potential

<正> We study the formation of a dynamically-stabilized dissipation-managed bright soliton in a quasi-one-dimensionalBose-Einstein condensate by including an imaginary three-body recombination loss term and an imaginarylinear feeding one in the Gross- Pitaevskii equation,trapped in a shallow optical-lattice potential.Based on the directapproach of perturbation theory for the nonlinear Schrodinger equation,we demonstrate that the height (as well aswidth) of bright soliton may have little change through selecting experimental parameters.