TY - JOUR
T1 - Composite Coherent States Approximation for One-Dimensional Multi-Phased Wave Functions
AU - Dongsheng Yin & Chunxiong Zheng
JO - Communications in Computational Physics
VL - 3
SP - 951
EP - 984
PY - 2012
DA - 2012/11
SN - 11
DO - http://doi.org/10.4208/cicp.101010.250511a
UR - https://global-sci.org/intro/article_detail/cicp/7397.html
KW - 
AB - <p style="text-align: justify;">The coherent states approximation for one-dimensional multi-phased wave functions is considered in this paper. The wave functions are assumed to oscillate on a characteristic wave length <em>O</em>(<span style="text-align: justify;">ε</span>) with ε≪1. A parameter recovery algorithm is first developed for single-phased wave function based on a moment asymptotic analysis. This algorithm is then extended to multi-phased wave functions. If cross points or caustics exist, the coherent states approximation algorithm based on the parameter recovery will fail in some local regions. In this case, we resort to the windowed Fourier transform technique, and propose a composite coherent states approximation method. Numerical experiments show that the number of coherent states derived by the proposed method is much less than that by the direct windowed Fourier transform technique.&nbsp;</p>