Conservative modified Crank-Nicolson and time-splitting wavelet methods for modeling Bose-Einstein condensates in delta potentials
Conservative modified Crank-Nicolson and time-splitting wavelet methods for modeling Bose-Einstein condensates in delta potentials
复制标题
用于模拟 δ 势中玻色-爱因斯坦凝聚体的保守修正克兰克-尼科尔森和时间分裂小波方法
DOI:
10.1016/j.amc.2017.02.037
复制
发表时间:
2017-08
影响因子:
4
通讯作者:
Song Songhe
中科院分区:
文献类型:
--
作者:
Qian Xu;Fu Hao;Song Songhe
This paper explores two wavelet-based energy-conserving algorithms for the Gross–Pitaevskii equation with delta potentials in Bose–Einstein condensates, named modified Crank–Nicolson wavelet method and time-splitting wavelet method, respectively. Both proposed methods can preserve the intrinsic properties of original problems as much as possible. Meanwhile, the rigorous error estimates and some conservative properties are investigated. They are proved to preserve the charge conservation exactly. The global energy conservation laws can be preserved under several conditions. In practical computations, to avoid a large drift in energy values caused by discontinuous potential well, an improved discrete delta function is implemented. Numerical experiments for attractive and repulsive cases are conducted during long time computations to show the performances of the proposed methods and verify the theoretical analysis.
登录
查看更多内容
DOI:
10.1007/b98958
发表时间:
2004
期刊:
--
影响因子:
--
作者:
C. Sulem;P. Sulem
通讯作者:
C. Sulem;P. Sulem
影响因子:
6.7
作者:
Yuan Ma;L. Kong;Jialin Hong;Ying Cao
通讯作者:
Yuan Ma;L. Kong;Jialin Hong;Ying Cao
DOI:
10.1016/j.cpc.2013.12.025
发表时间:
2014-04
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
Xu Qian;Songhe Song;Yaming Chen
通讯作者:
Xu Qian;Songhe Song;Yaming Chen
DOI:
10.1137/030601211
发表时间:
2003-10
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
W. Bao;Jie Shen
通讯作者:
W. Bao;Jie Shen
影响因子:
1.5
作者:
L. Stenflo;M. Yu
通讯作者:
L. Stenflo;M. Yu