IQUIFIB   02644
INSTITUTO DE QUIMICA Y FISICOQUIMICA BIOLOGICAS "PROF. ALEJANDRO C. PALADINI"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Modeling Electron Dynamics with Real Time TDDFT: Environment Effects and QM-MM Contribution
Autor/es:
MORZAN, URIEL; DAMIAN A. SCHERLIS; GONZALEZ LEBRERO, MARIANO CAMILO
Reunión:
Conferencia; Gordon Conference; 2013
Institución organizadora:
University of New England
Resumen:
In this poster we present an efficient GPU optimized real time implementation
of the Time Dependent Density Functional Theory (RT-TDDFT) based on our
DFT code for Gaussian basis sets. This implementation is validated against
linear-response TDDFT and experimental results for a series of molecules
subjected to electric pulses. We also present our QM-MM implementation
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which combines the Amber force field with the TDDFT scheme,to model
environment effects. Our results indicate that the inclusion of an MM subsystem
can considerably improve the agreement with experiments at a relatively small
computational cost. The QM-MM scheme not only allows for a more realistic
exploration of the conformational space, but also the inclusion of environment
effects that modify the electron dynamics.