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SUMMARY:Active Brownian Motion with Directional Reversals - Urna Basu\, Ra
 man Research Institute\, Bangalore
DTSTART:20210427T120000Z
DTEND:20210427T130000Z
UID:TALK159310@talks.cam.ac.uk
CONTACT:Camille Scalliet
DESCRIPTION:Zoom link: https://maths-cam-ac-uk.zoom.us/j/94018037756\n\nAc
 tive Brownian motion with intermittent direction reversals are common in a
  class of bacteria like Myxococcus Xanthus and Pseudomonas putida. We show
  that\, for such a motion in two dimensions\, the presence of the two time
  scales set by the rotational diffusion constant D_R and the reversal rate
  gamma give rise to four distinct dynamical regimes showing distinct behav
 iors. We analytically compute the position distribution which shows a cros
 sover from a strongly non-diffusive and anisotropic behavior at short-time
 s to a diffusive isotropic behavior via an intermediate regime. We find th
 at the marginal distribution in the intermediate regime shows an exponenti
 al or Gaussian behavior depending on whether gamma is larger or smaller th
 an D_R. We also find the persistence exponents in the four regimes. In par
 ticular\, we show that a novel persistence exponent α = 1 emerges due to 
 the direction reversal.
LOCATION:via zoom\, meeting ID 940-1803-7756
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