An analytically tractable time-changed jump-diffusion default intensity model
Abstract: We present a stochastic default intensity model where the intensity follows a tractable jump-diffusion process obtained by applying a deterministic change of time to a non mean-reverting square root jump-diffusion process. The model generates higher implied volatilities for default swaptions than mean-reverting versions, consistent with volatility levels observed on the market.
|Published on||5th September 2011|
|Authors||Naoufel El-Bachir, Damiano Brigo|