Nonadiabatic Dynamics in a Laser Field: Using Floquet Fewest Switches Surface Hopping To Calculate Electronic Populations for Slow Nuclear Velocities

2020 ◽  
Vol 16 (2) ◽  
pp. 821-834
Author(s):  
Zeyu Zhou ◽  
Hsing-Ta Chen ◽  
Abraham Nitzan ◽  
Joseph Eli Subotnik
Keyword(s):  
Laser Field ◽  
Nonadiabatic Dynamics ◽  
Surface Hopping

scholarly journals Nonadiabatic dynamics with quantum nuclei: simulating charge transfer with ring polymer surface hopping

2020 ◽  
Vol 221 ◽  
pp. 501-525 ◽  
Author(s):  
Soumya Ghosh ◽  
Samuele Giannini ◽  
Kevin Lively ◽  
Jochen Blumberger
Keyword(s):  
Charge Transfer ◽  
Polymer Surface ◽  
Nonadiabatic Dynamics ◽  
Surface Hopping ◽  
Different Temperatures ◽  
Ring Polymer ◽  
Adiabatic Dynamics

Exploring effects of quantizing nuclei in non-adiabatic dynamics for simulating charge transfer in a dimer of “ethylene-like-molecules” at different temperatures.

scholarly journals Nonadiabatic dynamics in multidimensional complex potential energy surfaces

2020 ◽  
Vol 11 (36) ◽  
pp. 9827-9835 ◽  
Author(s):  
Fábris Kossoski ◽  
Mario Barbatti
Keyword(s):  
Wave Function ◽  
Potential Energy ◽  
Complex Potential ◽  
Potential Energy Surfaces ◽  
Nonadiabatic Dynamics ◽  
Continuous Development ◽  
Surface Hopping ◽  
Multidimensional Complex ◽  
Function Norm ◽  
Energy Surfaces

Despite the continuous development of methods for describing nonadiabatic dynamics, there is a lack of multidimensional approaches for processes where the wave function norm is not conserved. A new surface hopping variant closes this knowledge gap.

Comparison of full multiple spawning, trajectory surface hopping, and converged quantum mechanics for electronically nonadiabatic dynamics

2001 ◽  
Vol 115 (3) ◽  
pp. 1172-1186 ◽  
Author(s):  
Michael D. Hack ◽  
Amanda M. Wensmann ◽  
Donald G. Truhlar ◽  
M. Ben-Nun ◽  
Todd J. Martı́nez
Keyword(s):  
Quantum Mechanics ◽  
Nonadiabatic Dynamics ◽  
Surface Hopping ◽  
Multiple Spawning

Stationary phase surface hopping for nonadiabatic dynamics: Two‐state systems

1994 ◽  
Vol 100 (7) ◽  
pp. 4835-4847 ◽  
Author(s):  
Frank Webster ◽  
E. T. Wang ◽  
P. J. Rossky ◽  
R. A. Friesner
Keyword(s):  
Stationary Phase ◽  
Nonadiabatic Dynamics ◽  
Surface Hopping ◽  
Phase Surface

scholarly journals Nonadiabatic Dynamics in Multidimensional Complex Potential Energy Surfaces

2020 ◽  
Author(s):  
Fábris Kossoski ◽  
Mario Barbatti
Keyword(s):  
Potential Energy ◽  
Potential Energy Surfaces ◽  
Electron Attachment ◽  
Complex Surface ◽  
Nonadiabatic Dynamics ◽  
Surface Hopping ◽  
Molecular Systems ◽  
Out Of Plane ◽  
Dynamics Simulations ◽  
Energy Surfaces

<p>Despite the continuous development of theoretical methodologies for describing nonadiabatic dynamics of molecular systems, there is a lack of approaches for processes where the norm of the wave function is not conserved, i.e., when an imaginary potential accounts for some irreversible decaying mechanism. Current approaches rely on building potential energy surfaces of reduced dimensionality, which is not optimal for more involving and realistic multidimensional problems. Here, we present a novel methodology for describing the dynamics of complex-valued molecular Hamiltonians, which is a generalisation of the trajectory surface hopping method. As a first application, the complex surface fewest switches surface hopping (CS-FSSH) method was employed to survey the relaxation mechanisms of the shape resonant anions of iodoethene. We have provided the first detailed and dynamical picture of the p*/s* mechanism of dissociative electron attachment in halogenated unsaturated compounds, which is believed to underlie electron-induced reactions of several molecules of interest. Electron capture into the p* orbital promotes C=C stretching and out-of-plane vibrations, followed by charge transfer from the double bond into the s* orbital at the C-I bond, and, finally, release of the iodine ion, all within only 15 fs. On-the-fly dynamics simulations of a vast class of processes can be envisioned with the CS-FSSH methodology, including autoionisation from transient anions, core-ionised and superexcited states, Auger and interatomic Coulombic decay, and time-dependent luminescence.</p>

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