Colloquium usually take place on Mondays, at 11am, in room LR6 C 023, centre Blaise Pascal at the ENS Lyon, close to the Physics Lab.
Hint : One click on the author's name redirects to the personal webpage, when available.
Few-body systems with resonantly enhanced two-body interactions display universal properties in the sense that they are independent of the details of the short-range interaction potential. The central paradigm in the three-body domain, predicted in the early 1970s by V. Efimov, is associated with the infinite ladder of weakly bound states with discrete scaling invariance. This curious prediction avoided experimental verification in different systems for decades, and only recently and exclusively surrendered to ultracold atoms. After giving a general introduction into Efimov scenario, I will describe the remarkable progress in its experimental investigation with the emphasize to our studies performed with ultracold lithim gas.
The success of a future thermonuclear fusion reactor, such as ITER, will depend on our understanding and mastering of plasma turbulence and its effects on the different plasma components, including the fusion-generated suprathermal alpha particles. Progress along these venues can be achieved in basic plasma physics devices, which allow for detailed measurements of plasma turbulence in well controlled experimental setups. In this talk, I will present recent advances on the Toroidal Plasma Experiment (TORPEX) in the fundamental understanding of intermittently-generated blobs, in methods to control them , and on the dynamic of fast ions interacting with plasma turbulence.