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SUMMARY:Universality in Active Matter - Chiu Fan Lee\, Imperial College
DTSTART:20180220T130000Z
DTEND:20180220T140000Z
UID:TALK97834@talks.cam.ac.uk
CONTACT:Professor Mike Cates
DESCRIPTION:Active matter is receiving intense attention from physicists b
 ecause of its importance to non-equilibrium physics and biological physics
 . But how different is active matter from equilibrium and non-equilibrium 
 matter that we are familiar with? If one focuses on the large distance beh
 aviour of a dynamical system\, a powerful\, stringent and unambiguous way 
 to quantity novelty is to use renormalisation group analysis to determine 
 whether the system’s behaviour constitutes a novel universality class (U
 C). This is the approach I will take in this talk. Specifically\, I will s
 tart by discussing the symmetries underlying the Ising model and how the c
 orresponding universal behaviour emerges. I will then generalise the Ising
  model to the active regime and discuss the emergence of other UCs. After 
 that I will discuss the symmetries underlying the incompressible Navier-St
 okes equation\, generalise it to the active regime and elucidate the vario
 us UCs associated to incompressible active fluids. Overall\, we will encou
 nter eight distinct UCs in this talk\, two of which are novel UCs discover
 ed in active matter.\n\n
LOCATION:MR11\, CMS
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