Abstract
We propose a term structure of forward rates driven by a kernel-correlated Lévy random field under the HJM framework. The kernel-correlated Lévy random field is composed of a kernel-correlated Gaussian random field and a centered Poisson random measure. We shall give a criterion to preclude arbitrage under the risk-neutral pricing measure. As applications, an interest rate derivative with general payoff functional is priced under this pricing measure.
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Notes
The kernel-correlated Gaussian field is well known in the field of stochastic partial differential equations (SPDEs). In fact its formal (or generalized) derivative is the so-called colored (or spatial-correlated) noise, which have been studied by many authors (see, e.g., Dalang [12], Mytnik, Perkins and Sturm [42] and Dalang and Mueller [13]).
\({\mathcal{D}}(\mathbb{R}^{d+1})\) denotes the topological vector space of functions \(\phi\in C_{0}^{\infty}(\mathbb{R}^{d+1})\) with the topology corresponding to the following: ϕ n →ϕ if and only if: (i) there exists a compact set K of ℝd+1 such that the support \({\rm supp}(\phi_{n}-\phi)\subset K\) for all n, and (ii) D α ϕ n →D α ϕ uniformly on K for each multi-index α=(α 1,…,α d ).
We generalize the model in [6] by replacing the Wiener process with a kernel-correlated Gaussian random field.
We assume that μ(t,T), σ(ξ,t,T), γ(ξ,t,T) and f 0(T) are “smooth” enough to guarantee that f(t,T) is continuous in the second variable and cadlag in the first one.
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The authors would like to thank the two reviewers for their valuable comments and suggestions that greatly improve the manuscript.
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This work was partially supported by the NSF of China (Nos. 11001213, 71201074, 70932003). The research of Bo was also supported by NCET-12-0914. The research of Yang was also supported by the Fundamental Research Funds for the Central Universities (No. 1127011812).
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Bo, L., Wang, Y. & Yang, X. Kernel-Correlated Lévy Field Driven Forward Rate and Application to Derivative Pricing. Appl Math Optim 68, 21–41 (2013). https://doi.org/10.1007/s00245-013-9196-2
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DOI: https://doi.org/10.1007/s00245-013-9196-2