1. Differentiability of quadratic forward-backward SDEs with rough drift
- Author
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Imkeller, Peter, Pellat, Rhoss Likibi, and Pamen, Olivier Menoukeu
- Subjects
Mathematics - Probability ,Primary: 60H10, 35K59, Secondary: 35K10, 60H07, 60H30 - Abstract
In this paper, we consider quadratic forward-backward SDEs (QFBSDEs), for {which} the drift in the forward equation does not satisfy the standard globally Lipschitz condition and the driver of the backward system {possesses} nonlinearity of type $f(|y|)|z|^2,$ where $f$ is any locally integrable function. We prove both the Malliavin and classical derivative of the QFBSDE and provide representations of these processes. We study a numerical approximation of this system in the sense of \cite{ImkDosReis} in which the authors assume that the drift is Lipschitz and the driver of the BSDE is quadratic in the traditional sense (i.e., $f$ is a positive constant). We show that the rate of convergence is the same as in \cite{ImkDosReis}
- Published
- 2022