English

BSDEs with terminal conditions that have bounded Malliavin derivative

Probability 2013-11-12 v2

Abstract

We show existence and uniqueness of solutions to BSDEs of the form Yt=ξ+tTf(s,Ys,Zs)dstTZsdWs Y_t = \xi + \int_t^T f(s,Y_s,Z_s)ds - \int_t^T Z_s dW_s in the case where the terminal condition ξ\xi has bounded Malliavin derivative. The driver f(s,y,z)f(s,y,z) is assumed to be Lipschitz continuous in yy but only locally Lipschitz continuous in zz. In particular, it can grow arbitrarily fast in zz. If in addition to having bounded Malliavin derivative, ξ\xi is bounded, the driver needs only be locally Lipschitz continuous in yy. In the special case where the BSDE is Markovian, we obtain existence and uniqueness results for semilinear parabolic PDEs with non-Lipschitz nonlinearities. We discuss the case where there is no lateral boundary as well as lateral boundary conditions of Dirichlet and Neumann type.

Keywords

Cite

@article{arxiv.1211.1089,
  title  = {BSDEs with terminal conditions that have bounded Malliavin derivative},
  author = {Patrick Cheridito and Kihun Nam},
  journal= {arXiv preprint arXiv:1211.1089},
  year   = {2013}
}