A mean-field extension of the LIBOR market model
Abstract
We introduce a mean-field extension of the LIBOR market model (LMM) which preserves the basic features of the original model. Among others, these features are the martingale property, a directly implementable calibration and an economically reasonable parametrization of the classical LMM. At the same time, the mean-field LIBOR market model (MF-LMM) is designed to reduce the probability of exploding scenarios, arising in particular in the market-consistent valuation of long-term guarantees. To this end, we prove existence and uniqueness of the corresponding MF-LMM and investigate its practical aspects, including a Black '76-type formula. Moreover, we present an extensive numerical analysis of the MF-LMM. The corresponding Monte Carlo method is based on a suitable interacting particle system which approximates the underlying mean-field equation.
Keywords
Cite
@article{arxiv.2109.10779,
title = {A mean-field extension of the LIBOR market model},
author = {Sascha Desmettre and Simon Hochgerner and Sanela Omerovic and Stefan Thonhauser},
journal= {arXiv preprint arXiv:2109.10779},
year = {2022}
}