Resolve "Gaussian random vectors in WOLF: We've been wrong for a long time"

Closes #475 (closed)

include/core/problem/problem.h

@@ -366,7 +366,10 @@ class Problem : public std::enable_shared_from_this<Problem>
 
 
         // All branches -------------------------------------------
-        // perturb states
+        /**
+         *  \brief perturb all states states with random noise
+         * following an uniform distribution in [ -amplitude, amplitude ]
+         */
         void perturb(double amplitude = 0.01);
         // transform states
         void transform(const VectorComposite& _transformation);