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SUMMARY:Microscopic theories of active particle systems and their entropy 
 production - Rosalba Garcia Millan\, Imperial College
DTSTART:20200519T120000Z
DTEND:20200519T130000Z
UID:TALK140404@talks.cam.ac.uk
CONTACT:Professor Mike Cates
DESCRIPTION:Active motility is present in some non-equilibrium particle sy
 stems where energy is transformed into self-propulsion. The entropy produc
 tion rate\, which crucially depends on the microscopic dynamics\, measures
  how far from equilibrium the particle system is. In the absence of an exa
 ct solution\, a microscopic theory can be provided by the Doi-Peliti forma
 lism\, where the degree of freedom is the position-wise occupation number 
 and which is able to maintain the particle entity. To illustrate this poin
 t\, I will show how to derive the Doi-Peliti field theory of a particle un
 dergoing run-and-tumble motion with diffusion in a 1D harmonic potential\,
  and use it to calculate the entropy production rate in closed form.
LOCATION:Zoom: https://zoom.us/j/5916271322 Meeting ID: 591-627-1322
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