Fonseca, JosE Da; Grasselli, Martino; Tebaldi, Claudio - In: Quantitative Finance 8 (2008) 6, pp. 591-604
We model the volatility of a single risky asset using a multifactor (matrix) Wishart affine process, recently introduced in finance by Gourieroux and Sufana. As in standard Duffie and Kan affine models the pricing problem can be solved through the Fast Fourier Transform of Carr and Madan. A...