ESPCI web site
PMMH’s weekly seminar is held every Friday at 11 am (map)
Stéphane Perrard
Etienne Reyssat
Virgile Thiévenaz
PMMH
BARRE CASSAN
BAT A 1ER ETAGE CASE 18
7 QUAI SAINT BERNARD
75005 PARIS
France
Tel : (33) 1 40 79 45 22
Séminaire PMMH - Arnaud Lazarus (Institut d’Alembert, Sorbonne Université)
New insights on the dynamic stability of time-periodic systems
Periodically time-varying systems are a class of mathematical problems that underlie many important phenomena and applications in physics, such as parametric instabilities,
acoustic tweezers, mass spectrometers and Paul traps or any Floquet engineered systems in Quantum Mechanics. Eventually, the mechanics underlying these problems is fundamentally understood by studying the dynamic stability of a particle in a potential energy landscape that is periodically varying with time, i.e. a dynamical system with a non conservative Hamiltonian.
We present here such a fundamental model, both experimentally and theoretically, and show new appealing results when the variation of energy landscape is large and happens in a time scale similar to the one of the particle. Although in this case, classical approaches such as perturbation theories at play in parametric instabilities or Kapitza dynamical stabilization are no more useful, it is still possible to establish elementary synchronization rules that should be of interest for new promising functionalities in stability and dynamical system theory. Notably, looking for an optimal fashion to stabilize or trap a mass in a strongly oscillating energy field can actually be done by using fundamental mathematical rules of quantum physics.
The audience is composed of people with rather heterogeneous backgrounds including specialists in solids, fluids, granular flows, statistical physics... so the idea is to keep your talk understandable by people not necessarily working in your field... The seminar time slot runs from 11am to noon so the best is to make the talk last around 45 minutes to leave some time for discussion.
- Séminaires ESPCI-ENS de biophysique
- Séminaires du Département de Physique de l’ENS
- Séminaires du Laboratoire d’Hydrodynamique de l’X
- Séminaire de Mécanique d’Orsay (page web FAST)
- Séminaire de Mécanique d’Orsay (page web LIMSI)
- Séminaire de Mécanique des Fluides de l’Institut Jean le Rond d’Alembert
- Séminaires du laboratoire MSC, Paris VII
- Séminaires Gulliver
Link to cofee seminar (internal, every Thursday)
