Random Interactions
Spatial extent of N Brownian walkers
by Dr. Anupam Kundu (LPTMS, Paris)
Wednesday, September 24, 2014
from
to
(Asia/Kolkata)
at A304
at A304
Description |
Statistical properties of the spatial extent of N Brownian walkers is relevant to various physical situations like estimation of habitat sizes of animal populations, disease spread in crop fields and river pollution amongst others. In the first part of my talk, I will focus on the distribution of the size of the region visited and of the region overlapped by N independent and identical one-dimensional Brownian walkers. Using a connection between the spatial extent and extreme displacements I will show, in the large N limit, that these distributions have interesting limiting forms. These limiting forms are different from the standard extreme value distributions of independent and identical random variables. In the second part of my talk, I will discuss possible generalizations to situations where the walkers are interacting. |