Title
Metastability in Stochastic Replicator Dynamics.
Abstract
We consider a novel model of stochastic replicator dynamics for potential games that converts to a Langevin equation on a sphere after a change of variables. This is distinct from the models of stochastic replicator dynamics studied earlier. In particular, it is ill-posed due to non-uniqueness of solutions, but is amenable to a natural selection principle that picks a unique solution. The model allows us to make specific statements regarding metastable states such as small noise asymptotics for mean exit times from their domain of attraction, and quasi-stationary measures. We illustrate the general results by specializing them to replicator dynamics on graphs and demonstrate that the numerical experiments support theoretical predictions.
Year
DOI
Venue
2018
10.1007/s13235-018-0265-7
Dynamic Games and Applications
Keywords
Field
DocType
Stochastic replicator dynamics,Langevin equation on sphere,Metastable states,Intermittency,Small noise asymptotics,Mean exit time,Quasi-stationary distributions,Primary: 91A22,Secondary: 91A25,60H10,34F05
Statistical physics,Change of variables,Graph,Mathematical analysis,Natural selection,Replicator equation,Metastability,Asymptotic analysis,Langevin equation,Mathematics
Journal
Volume
Issue
ISSN
abs/1801.02161
2
2153-0785
Citations 
PageRank 
References 
1
0.35
13
Authors
2
Name
Order
Citations
PageRank
Konstantin Avrachenkov11250126.17
Vivek S. Borkar2974142.14