Hi Everyone,
Tomorrow we'll have group meeting at our new time - 2:30pm. Joon and
Man Hong will be presenting their research - an abstract of which is
provided below. See you there!
"Open quantum dynamics associated with bosonic bath, e. g. the spin-boson model,
can describe many chemical and physical processes such as electron
transfer and quantum impurity.
In spite of its simple structure of the Hamiltonian, the analytic
solution is not
available so far and the numerical simulation
becomes very expensive as the number of degrees of freedom (DOF) and
the bath temperature increases.
In this talk, we will cover two different approaches to the
bosonic problems, namely coherent state based time-dependent variational
(TDV) method and quantum state diffusion (QSD). Both methods start with the
coherent state expansion for the bath DOF but
end up with completely different numerical procedures. They, however,
share many common features and we have tried to complement each method
via the links.
We will present potential improvements to these methods.
Additionally, we will discuss a possible efficient time propagation at
finite temperature through the thermal vacuum state."
--
Ryan Babbush | PhD Student in Chemistry
(949) 331-3943 | babbush(a)fas.harvard.edu
Harvard University | Aspuru-Guzik Research Group
12 Oxford Street, Box 400 | Cambridge, MA 02138
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