Koziol, Philipp; Schell, Carmen; Eckhardt, Michael - 2015
that the use of a Gaussian copula in credit risk stress testing should not by default be dismissed in favor of a heavy …-tailed copula which is widely recommended in the finance literature. Gaussian copula would be the appropriate choice for estimating … high stress effects under extreme scenarios. Heavy-tailed copulas like the Clayton or the t copula are recommended in the …