For the FMO-interested. Birgit and Tobias gave nice talks about this
work at APS March Meeting.
Hierarchical EOM and GPU's. What more could you ask for?
http://arxiv.org/abs/1110.1511
Modelling of Oscillations in Two-Dimensional
Echo-Spectra of the Fenna-Matthews-Olson Complex
(Submitted on 7 Oct 2011)
Recent experimental observations of
time-dependent beatings in the
two-dimensional echo-spectra of light-harvesting complexes at
ambient
temperatures have opened up the question whether coherence and
wave-like
behaviour plays a significant role in photosynthesis. We perform a
numerical
study of the absorption and echo-spectra of the
Fenna-Matthews-Olson (FMO)
complex in chlorobium tepidum and analyse the requirements in the
theoretical
model needed to reproduce beatings in the calculated spectra. The
energy
transfer in the FMO pigment-protein complex is theoretically
described by an
exciton Hamiltonian coupled to a phonon bath which account for the
pigments
electronic and vibrational excitations respectively. We use the
hierarchical
equations of motions method to treat the strong couplings in a
non-perturbative
way. We show that the oscillations in the two-dimensional
echo-spectra persist
in the presence of thermal noise and static disorder.