Active systems coupled to fluids
vendredi 6 juillet 2018, 11h00 - 12h00
The talk will be on active systems coupled to fluids (in contrast to Vicsek model) as is natural for biological systems. In such systems, it has been known for sometime that all orientationally ordered active phases are destroyed due to interactions mediated by the solvent. I will show that there are important situations in which this is not the case — activity need not always be destabilising. Nonequilibrium forces can actually end up stabilising a homogeneous ordered phase. While the talk will not be about Vicsek model etc., it will be nice to discuss various issues that arise from attempting to obtain the hydrodynamic equations in such systems. I would love to discuss this more after/before the talk.