Special Session 74: Recent advances in local and nonlocal PDEs

Replicator dynamics with genetic drift as the large population limit of a discrete Moran process
Riccardo Durastanti
Universita degli Studi di Napoli Federico II
Italy
Co-Author(s):    
Abstract:
We study the large population limit of a multi-strategy discrete-time Moran process in the weak selection regime. By applying an appropriate simultaneous rescaling of the population size, the time step, and the selection regime, we derive the replicator dynamics with genetic drift. We rigorously prove the existence of a very weak solution for the resulting limit equation: a parabolic nonlocal equation characterized by a degenerate principal operator of Fleming-Viot type. This is a joint work with S. Almi, M. Morandotti, G. Orlando and F. Solombrino.