Hi Everyone,
Tomorrow we'll be having the group meeting that we never had last Friday
due to the dragnet that kept us all inside. Again, we meet at the usual
time and place and our own, Dr. Takatoshi Fujita will tell us about his
work.
====================================
Title: Dynamics of an exciton coupled to a classical phonon bath
In this talk, I will discuss dynamics of an exciton system coupled to a
classical phonon bath and a relationship between atomistic and stochastic
bath models.
If the phonon bath is treated classically, dynamics of the exciton and
phonon systems are described by the Ehrenfest equations.
I will show by introducing Mori's projection operator technique that
stochastic bath models can be regarded as an approximation of the Ehrenfest
equations. Deficiencies of stochastic models can be explained by the
derivation. Then, I will propose an idea to include reorganization effects
into the stochastic model and apply it to study Stokes shifts in model
J-aggregates. Finally, I will describe possible idea to correct quantum
effects of the phonon bath.
--
Ryan Babbush | PhD Student in Physics
(949) 331-3943 | babbush(a)fas.harvard.edu
Harvard University | Aspuru-Guzik Group
12 Oxford Street | Cambridge, MA 02138
_______________________________________________
Aspuru-meetings-list mailing list
Aspuru-meetings-list(a)lists.fas.harvard.edu
https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list