Otro
Dissipative dynamics of matter-wave solitons in a nonlinear optical lattice
Registro en:
Physical Review A. College Pk: Amer Physical Soc, v. 76, n. 4, 9 p., 2007.
1050-2947
10.1103/PhysRevA.76.043611
WOS:000250619700152
WOS000250619700152.pdf
Autor
Abdullaev, F. Kh.
Gammal, A.
da Luz, H. L. F.
Tomio, Lauro
Resumen
Dynamics and stability of solitons in two-dimensional (2D) Bose-Einstein condensates (BEC), with one-dimensional (1D) conservative plus dissipative nonlinear optical lattices, are investigated. In the case of focusing media (with attractive atomic systems), the collapse of the wave packet is arrested by the dissipative periodic nonlinearity. The adiabatic variation of the background scattering length leads to metastable matter-wave solitons. When the atom feeding mechanism is used, a dissipative soliton can exist in focusing 2D media with 1D periodic nonlinearity. In the defocusing media (repulsive BEC case) with harmonic trap in one direction and nonlinear optical lattice in the other direction, the stable soliton can exist. Variational approach simulations are confirmed by full numerical results for the 2D Gross-Pitaevskii equation.