Current fluctuations in reset and run-and-tumble processes

Statistical Physics and Complexity Group meeting

Current fluctuations in reset and run-and-tumble processes

  • Event time: 11:30am until 12:30pm
  • Event date: 18th March 2020
  • Speaker: Dr Rosemary Harris (Queen Mary University of London)
  • Location: Room 2511,

Event details

I will present work on current fluctuations in stochastic processes with resetting, demonstrating in particular how phase transitions in the large deviations can be understood via a mapping to the classic Poland-Scheraga model for DNA denaturation [R. J. Harris and H. Touchette, J. Phys. A: Math. Theor. 50, 10LT01 (2017)].  This approach can be extended to treat the case where the dynamics between resets depends on the value of a parameter fixed at the last reset and, in this context, I will briefly discuss the application to run-and-tumble models of bacterial dynamics. Finally, I will mention the recent development of a "Thermodynamic Uncertainty Relation" which applies for such run-and-tumble–type processes [M. Shreshtha and R. J. Harris, EPL (Europhysics Letters) 126, 40007 (2019)].