The possibility of using generalized telegrapher's equations (GTEs) to describe the time evolution of probability densities of non-Markovian stochastic processes is consedered. The solutions of hyperbolic equations of the type of GTE being generally not positive definite, we derive conditions for which this global property if fulfilled. © 1990.
Giuseppe Carleo, Riccardo Rossi, Julien Sebastian Gacon, Jannes Willy E. Nys, Stefan Woerner
Gonzalo Emiliano Ruiz Stolowicz