On the backward Euler method for a generalized Ait-Sahalia-type rate model with Poisson jumps

Autor: Zhao, Yuying, Wang, Xiaojie, Wang, Mengchao
Rok vydání: 2020
Předmět:
Druh dokumentu: Working Paper
Popis: This article aims to reveal the mean-square convergence rate of the backward Euler method (BEM) for a generalized Ait-Sahaliz interest rate model with Poisson jumps. The main difficulty in the analysis is caused by the non-globally Lipschitz drift and diffusion coefficients of the model. We show that the BEM preserves positivity of the original problem. Furthermore, we successfully recover the mean-square convergence rate of order one-half for the BEM. The theoretical findings are accompanied by several numerical examples.
Databáze: arXiv