Gregory Falkovich Weizmann Institute for Science, Israel - Jeudi 26 septembre.
I start from a brief introduction to turbulence as far-from-equilibrium state of any
system with many degrees of freedom. Examples will be taken not only from fluids
and plasma, but also from condensed matter, atomic physics and optics. I then
describe turbulence cascades and focus on what universal features one can
distinguish at the scales in between pumping and dissipation scales. The main
focus will be on symmetries of turbulence statistics. The central notion is anomaly :
finite effect of symmetry breaking at the limit when symmetry-breaking factor tend to
zero. On the other hand, I’ll describe emerging conformal invariance in turbulent
inverse cascades.
You can also watch this video on the multimedia site ENS :savoirs.ens.fr
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