International Workshop on ''Atomic Physics''

November 24 - 28, 2008

with focus days on
"Quantum dynamics of atoms and molecules
in complex environments"


Scientific report
Scientific coordinators:
Jan-Michael Rost (mpipks Dresden)
Walter Strunz (TU Dresden)
A wide variety of topics were covered at the "Atomic Physics" International
Workshop 2008 (November 24 - 28), ranging from atomic and molecular dynamics to
more fundamental and conceptual issues. There were 64 participants from
many European and some non-European countries of which a balanced mixture of well
established and promising young scientists gave about 40 invited talks. Other participants
presented their research during two poster sessions on Tuesday and Thursday evening.

The first two days were devoted to the "focus topic" on dissipative quantum dynamics
in atomic and molecular systems. Invited speakers both from Theoretical Physics and
Theoretical Chemistry reported on current developments in the description of complex
quantum dynamics. On Monday many speakers gave an account of their research on quantum
transport phenomena in biologically or chemically relevant complex molecules and we had the
pleasure to witness the full catalogue of possible approaches to these highly complex
systems (fully quantum approaches, master equations, path integrals, stochastic Schrödinger
equations, quantum-classical hybrid approaches, MD simulations, etc.). Focus was directed at
questions on the relevance of coherent phenomena in such systems, the role of
structured reservoir spectral densities, and non-perturbative results. A subject that could be
felt permeating through many talks was concerned with the question whether -- for some
applications -- dynamics may well be described classically, while all the quantum features
are merely reflected in the initial phase space distribution.
On Tuesday we heard talks on a variety of topics ranging from (quantum) control
and quantum error correction under the influence of noise, the quantum strong damping limit,
test of Bell inequalities featuring massive particles, and once again talks that highlighted
the intricate difficulties when faced with an efficient description of complex quantum dynamics.
Wednesday started with experimental accounts of quantum dynamics in or on Helium nanodroplets,
a field of fascinating possibilities as these droplets are not only interesting many-body
quantum systems themselves but they provide ideal refrigerators for
molecular spectroscopy. These talks were followed by two sessions on the topical issue of
(ultracold) Rydberg physics. Thursday was dedicated to the whole spectrum of topical research
in atomic and molecular physics, ranging from Bose-Einstein condensates over femtochemistry
and attosecond pulses to quantum chaos. The international workshop came to a close on Friday
with the presentation of experimental results in laser-atom and laser-molecule interaction;
again we heard some speakers touching more conceptal issues concerning coherence and
entanglement in atomic and molecular processes.

The workshop was attended by researchers from divers backgrounds such as theoretical and experimental
atomic, molecular and solid state physics, quantum optics, theoretical chemistry and theoretical
biophysics, statistical physics and quantum information. As on so many occasions before, supported by
the excellent local organisation, the MPI-PKS provided an ideal environment for
stimulating scientific discussions and an exchange of ideas between these various fields. It became
very clear that a successful framework for the description of complex quantum dynamics will have to
merge concepts from all these research areas.