Exact solitonic solutions of the Gross-Pitaevskii equation with time-modulated nonlinearity of a(t) = a(0) / (t + t(0)) are obtained. With help of these solutions, we analyze the properties of Feshbach-managed solitons in Bose-Einstein condensates in details. Our results show that the parameters of atomic matter waves can be manipulated by proper variation of the scattering length. In particular, an exact two-solition solution is given, from which, it is shown that the separation between the neighboring solitons can be effectively maintained by allowing the solitons to have unequal initial amplitudes.
部门归属
[liang, z. x.; zhang, z. d.] chinese acad sci, shenyang natl lab mat sci, inst met res & int ctr mat phys, shenyang 110016, peoples r china.;liang, zx (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res & int ctr mat phys, wenhua rd 72, shenyang 110016, peoples r china;zhxliang@gmail.com zdzhang@imr.ac.cn
Z. X. Liang,Z. D. Zhang. Exact solitons in the Gross-Pitaevskii equation with time-modulated nonlinearity[J]. Modern Physics Letters B,2007,21(7):383-390.
APA
Z. X. Liang,&Z. D. Zhang.(2007).Exact solitons in the Gross-Pitaevskii equation with time-modulated nonlinearity.Modern Physics Letters B,21(7),383-390.
MLA
Z. X. Liang,et al."Exact solitons in the Gross-Pitaevskii equation with time-modulated nonlinearity".Modern Physics Letters B 21.7(2007):383-390.
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