Short-time Maximum Entropy Method Analysis of Molecular Dynamics Simulation: Unimolecular Decomposition of Formic Acid
Chemical Physics Volume 351 Issue 1-3
Page 7-12
published_at 2008-07-03
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| File | |
| Title ( eng ) |
Short-time Maximum Entropy Method Analysis of Molecular Dynamics Simulation: Unimolecular Decomposition of Formic Acid
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| Creator |
Nomura Tetsuo
Tabayashi Kiyohiko
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| Source Title |
Chemical Physics
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| Volume | 351 |
| Issue | 1-3 |
| Start Page | 7 |
| End Page | 12 |
| Abstract |
We performed spectral analysis by using the maximum entropy method instead of the traditional Fourier transform technique to investigate the short-time behavior in molecular systems, such as the energy transfer between vibrational modes and chemical reactions. This procedure was applied to direct ab initio molecular dynamics calculations for the decomposition of formic acid. More reactive trajectories of dehydrolation than those of decarboxylation were obtained for Z-formic acid, which was consistent with the prediction of previous theoretical and experimental studies. Short-time maximum entropy method analyses were performed for typical reactive and nonreactive trajectories. Spectrograms of a reactive trajectory were obtained; these clearly showed the reactant, transient, and product regions, especially for the dehydrolation path.
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| Keywords |
Classical trajectory calculation
Short-time Fourier transformation
Maximum entropy method
Spectrogram
Formic acid
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| NDC |
Chemistry [ 430 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
Elsevier Science BV
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| Date of Issued | 2008-07-03 |
| Rights |
Copyright (c) 2008 Elsevier B.V.
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| Publish Type | Author’s Original |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0301-0104
[DOI] 10.1016/j.chemphys.2008.03.022
[NCID] AA00602111
[DOI] http://dx.doi.org/10.1016/j.chemphys.2008.03.022
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