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NUMERICAL SIMULATION OF THE NONLINEAR SCHRODINGER EQUATION WITH MULTIDIMENSIONAL PERIODIC POTENTIALS
被引:15
|作者:
Huang, Zhongyi
[1
]
Jin, Shi
[1
,2
]
Markowich, Peter A.
[3
,4
]
Sparber, Christof
[4
,5
]
机构:
[1] Tsinghua Univ, Dept Math Sci, Beijing 100084, Peoples R China
[2] Univ Wisconsin, Dept Math, Madison, WI 53706 USA
[3] Univ Vienna, Fac Math, A-1090 Vienna, Austria
[4] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England
[5] Wolfgang Pauli Inst Vienna, A-1090 Vienna, Austria
来源:
关键词:
nonlinear Schrodinger equation;
Bloch decomposition;
time-splitting spectral method;
Bose-Einstein condensates;
Thomas-Fermi approximation;
lattice potential;
D O I:
10.1137/070699433
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
By extending the Bloch-decomposition-based time-splitting spectral method we introduced earlier, we conduct numerical simulations of the dynamics of nonlinear Schrodinger equations subject to periodic and con. ning potentials. We consider this system as a two-scale asymptotic problem with different scalings of the nonlinearity. In particular we discuss (nonlinear) mass transfer between different Bloch bands and also present three-dimensional simulations for lattice Bose-Einstein condensates in the super fluid regime.
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页码:539 / 564
页数:26
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