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SUMMARY:Approximate Descriptions of Brownian Particles Driven by Weakly Co
 loured Noise - Dr Yongjoo Baek\, DAMTP
DTSTART:20180424T120000Z
DTEND:20180424T130000Z
UID:TALK104653@talks.cam.ac.uk
CONTACT:Professor Mike Cates
DESCRIPTION:Brownian particles driven by weakly coloured Gaussian noise pr
 ovide a useful framework for studying active matter. Two different theoret
 ical approaches have been applied to this class of systems: one based on t
 he effective Fokker-Planck equations (the Fox and unified coloured noise a
 pproximations)\, and the other based on a perturbative solution of the Orn
 stein-Uhlenbeck process. While both methods give the same leading-order co
 rrections to the white-noise limit\, nontrivial disagreements appear from 
 the second and higher order. In this talk\, I will review the methods and 
 discuss how they yield different criteria for the existence of steady-stat
 e currents and long-range correlations.\n\n
LOCATION:MR11\, CMS
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