COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring. |

University of Cambridge > Talks.cam > DAMTP Statistical Physics and Soft Matter Seminar > How to Measure Large Deviation Functions of Dynamical Quantities

## How to Measure Large Deviation Functions of Dynamical QuantitiesAdd to your list(s) Download to your calendar using vCal - Takahiro Nemoto, University of Paris Diderot
- Tuesday 05 June 2018, 13:00-14:00
- MR11, CMS.
If you have a question about this talk, please contact Professor Mike Cates. Large deviation functions of non-equilibrium accumulative/integrated quantities have been intensively studied in the last decade in thermally fluctuated particles (e.g., Brownian particles, biological motors, Granular particles) as well as in exactly solvable lattice gas models (e.g., ASEP , KPZ, KCMs). Although large deviations show many interesting physics, studying them is difficult, as rare fluctuations showing these large deviations are hardly observed. In this seminar, I will explain an algorithm to accelerate the observation of these rare events in numerical simulations. The algorithm uses an idea of population dynamics/diffusion quantum Monte-Carlo method [1]: an ensemble of the copies of the system is simulated, where the dynamics of the ensemble include a selection-mutation process, namely, rare copies are multiplied (have descendants) but typical ones are killed (become extinct). I will also review our recent works that focus on the fundamental aspects of the algorithm (convergence property [2] and an improvement to the algorithm by introducing a control force [3]) as well as on the application of the algorithm to active matter [4]. [1] Cristian Giardinà, Jorge Kurchan and Luca Peliti, Phys. Rev. Lett. 96, 120603 (2006). [2] T.N., Esteban Guevara and Vivien Lecomte, PRE 95 ,012102(2017) and E.G., T.N. and V.L. PRE 95 ,062134 (2017). [3] T.N., Freddy Bouchet, Robert L. Jack and V.L.,PRE 93,062123(2016) and T.N., R.L.J. and V.L., PRL 118 ,115702(2017). [4] T.N., Michael E. Cates, Étienne Fodor, R.L.J. and Julien Tailleur in preparation. This talk is part of the DAMTP Statistical Physics and Soft Matter Seminar series. ## This talk is included in these lists:Note that ex-directory lists are not shown. |
## Other listsNetworking with IndieBio: The world's largest seed biotech accelerator The Yerushah Lecture 2012 Cambridge Conservation Seminars## Other talksEnvironmental shocks and demographic consequences in England: 1280-1325 and 1580-1640 compared The dynamics of functional brain networks: Examining the role of noradrenaline 'Friends or Foes? Helminth-microbiota interactions in the equine gastrointestinal tract Babraham Lecture - The Remote Control of Gene Expression Automotive Acoustics and Software over the Air Babraham Lecture - Cellular responses to DNA damage: from mechanistic insights to applications in cancer therapy |