Trajectory-adjusted electronic zero point energy in classical Meyer-Miller vibronic dynamics: Symmetrical quasiclassical application to photodissociation
Abstract
An electronic zero-point energy (ZPE) adjustment protocol is proposed within the context of the symmetrical quasiclassical (SQC) quantization of the electronic oscillator degrees of freedom (DOF) in classical Meyer-Miller (MM) vibronic dynamics for the molecular dynamics treatment of electronically nonadiabatic processes. The “adjustment” procedure maintains the same initial and final distributions of coordinates and momenta in the electronic oscillator DOF as previously given by the SQC windowing protocol but modifies the ZPE parameter in the MM Hamiltonian, on a per trajectory basis, so that the initial nuclear forces are precisely those corresponding to the initial electronic quantum state. Examples demonstrate that this slight modification to the standard SQC/MM approach greatly improves treatment of the multistate nonadiabatic dynamics following a Franck-Condon type vertical excitation onto a highly repulsive potential energy surface as is typical in the photodissociation context.
- Authors:
-
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; National Science Foundation (NSF)
- OSTI Identifier:
- 1577592
- Alternate Identifier(s):
- OSTI ID: 1514746
- Grant/Contract Number:
- AC02-05CH11231; CHE-1464647
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Chemical Physics
- Additional Journal Information:
- Journal Volume: 150; Journal Issue: 19; Journal ID: ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Quantum chemical dynamics; Molecular dynamics; Zero point energy; Classical trajectory method; Non-adiabatic molecular dynamics; Photodissociation; Quantum algorithms; Quantum effects; Potential energy surfaces
Citation Formats
Cotton, Stephen J., and Miller, William H. Trajectory-adjusted electronic zero point energy in classical Meyer-Miller vibronic dynamics: Symmetrical quasiclassical application to photodissociation. United States: N. p., 2019.
Web. doi:10.1063/1.5094458.
Cotton, Stephen J., & Miller, William H. Trajectory-adjusted electronic zero point energy in classical Meyer-Miller vibronic dynamics: Symmetrical quasiclassical application to photodissociation. United States. https://doi.org/10.1063/1.5094458
Cotton, Stephen J., and Miller, William H. Mon .
"Trajectory-adjusted electronic zero point energy in classical Meyer-Miller vibronic dynamics: Symmetrical quasiclassical application to photodissociation". United States. https://doi.org/10.1063/1.5094458. https://www.osti.gov/servlets/purl/1577592.
@article{osti_1577592,
title = {Trajectory-adjusted electronic zero point energy in classical Meyer-Miller vibronic dynamics: Symmetrical quasiclassical application to photodissociation},
author = {Cotton, Stephen J. and Miller, William H.},
abstractNote = {An electronic zero-point energy (ZPE) adjustment protocol is proposed within the context of the symmetrical quasiclassical (SQC) quantization of the electronic oscillator degrees of freedom (DOF) in classical Meyer-Miller (MM) vibronic dynamics for the molecular dynamics treatment of electronically nonadiabatic processes. The “adjustment” procedure maintains the same initial and final distributions of coordinates and momenta in the electronic oscillator DOF as previously given by the SQC windowing protocol but modifies the ZPE parameter in the MM Hamiltonian, on a per trajectory basis, so that the initial nuclear forces are precisely those corresponding to the initial electronic quantum state. Examples demonstrate that this slight modification to the standard SQC/MM approach greatly improves treatment of the multistate nonadiabatic dynamics following a Franck-Condon type vertical excitation onto a highly repulsive potential energy surface as is typical in the photodissociation context.},
doi = {10.1063/1.5094458},
journal = {Journal of Chemical Physics},
number = 19,
volume = 150,
place = {United States},
year = {Mon May 20 00:00:00 EDT 2019},
month = {Mon May 20 00:00:00 EDT 2019}
}
Web of Science
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