Singular Limit of BSDEs and Optimal Control of two Scale Stochastic Systems in Infinite Dimensional Spaces
Abstract
In this paper we study, by probabilistic techniques, the convergence of the value function for a two-scale, infinite-dimensional, stochastic controlled system as the ratio between the two evolution speeds diverges. The value function is represented as the solution of a backward stochastic differential equation (BSDE) that it is shown to converge towards a reduced BSDE. The noise is assumed to be additive both in the slow and the fast equations for the state. Some non degeneracy condition on the slow equation are required. The limit BSDE involves the solution of an ergodic BSDE and is itself interpreted as the value function of an auxiliary stochastic control problem on a reduced state space.
Keywords
Cite
@article{arxiv.1701.01165,
title = {Singular Limit of BSDEs and Optimal Control of two Scale Stochastic Systems in Infinite Dimensional Spaces},
author = {Giuseppina Guatteri and Gianmario Tessitore},
journal= {arXiv preprint arXiv:1701.01165},
year = {2018}
}
Comments
It was originally mistakenly submitted as a new work (arXiv:1803.05908v1, which has been withdrawn)