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• W2891540913 abstract "A modified Gaussian wave packet relaxation method is proposed to calculate the ground state wave function using an expansion of frozen Gaussian wave packets. This new procedure consists of two steps. In the first step, a multidimensional Gaussian product placed at the ground state equilibrium geometry is propagated in imaginary time. The relaxation optimizes the widths of the one-dimensional Gaussians. In the second step, additional Gaussian wave packets with the same widths are placed near the equilibrium geometry, and the corresponding expansion coefficients are optimized using the same relaxation method. This new algorithm is tested in photodissociation of NOCl and NH3, and the results show good agreement with the exact results in the energy, wave function, and absorption spectrum. In particular, the highly structured absorption spectrum of NH3 is reproduced, underscoring the accuracy of both the initial wave packet and the excited state propagation." @default.
• W2891540913 created "2018-09-27" @default.
• W2891540913 creator A5038375764 @default.
• W2891540913 creator A5047057568 @default.
• W2891540913 creator A5066544142 @default.
• W2891540913 date "2018-09-20" @default.
• W2891540913 modified "2023-10-01" @default.
• W2891540913 title "Modified Gaussian Wave Packet Method for Calculating Initial State Wave Functions in Photodissociation" @default.
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• W2891540913 doi "https://doi.org/10.1021/acs.jctc.8b00771" @default.
• W2891540913 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30234984" @default.
• W2891540913 hasPublicationYear "2018" @default.
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