A reflection principle for correlated defaults

Frédéric Patras

Stochastic Processes and their Applications, 2006, vol. 116, issue 4, 690-698

Abstract: The correct valuation of the so-called "correlation products" in the credit risk market such as n-th-to-default swaps or CDOs requires a better understanding of higher dimensional barrier default phenomena. We introduce a reflection principle suited for the pricing of credit derivatives on two securities, paving the way for the development of new methods in the field. For that purpose, we introduce new processes, the distributions of which involve generalized Bessel functions. As an application, we derive a closed formula for second-to-default digital swaps, under the standard Black-Cox hypothesis on the conditions triggering default.

Keywords: Correlated; defaults; Reflection; principle; Default; swap; Bessel; function (search for similar items in EconPapers)
Date: 2006
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