Since 1995, when Bose-Einstein condensation in ultracold atomic gases has been realized experimentally, there has been a number of further substantial breakthroughs. Today, systems of ultracold bosonic and/or fermionic quantum gases allow for experimental control on a very high level concerning, e.g., the underlying trap geometry and the interaction strength. Moreover, they lend themselves to precise theoretical calculations of their static and dynamic properties, thus leading to highly accurate comparisons of experiment and theory. Ultracold atomic and molecular matter can be employed to provide practically ideal realizations of paradigmatically important many-body models considered in various fields, such as atomic and molecular physics, solid-state physics, and even nuclear physics. The high degree of control over the interatomic interactions also allows to probe quantum fluids in regimes and under conditions hitherto unavailable. Thus, at present, the field of ultracold quantum gases is extremely active, and expanding in many different directions. In particular, a new area of research is forming itself on the borderlines between atomic and molecular physics, quantum optics, and condensed matter physics.

This seminar, intended for about 70 participants in October 2008 will provide a comprehensive survey of the different facets of this rapidly evolving subject. Leading international experts will review the present status of the most promising developments concerning ultracold quantum gases from both the experimental and the theoretical point of view, and will discuss future trends and perspectives. Participants are invited to present their current research in two poster sessions. In order to promote young scientists, six outstanding posters will be selected for additional short talks.

Thus, the seminar will foster the exchange of information in this fast-developing field at the frontier of contemporary physics, and provide ample opportunity for scientific discussions. Similar to the previous workshop 'Quo vadis BEC?' held in Berlin in 2006, it is also intended to initiate future collaborations amongst the participants.