We identify a necessary and sufficient condition for a Lévy white noise to be a tempered distribution. More precisely, we show that if the Lévy measure associated with this noise has a positive absolute moment, then the Lévy white noise almost surely takes values in the space of tempered distributions. If the Lévy measure does not have a positive absolute moment of any order, then the event on which the Lévy white noise is a tempered distribution has probability zero.
"Lévy processes and Lévy white noise as tempered distributions." Ann. Probab. 45 (6B) 4389 - 4418, November 2017. https://doi.org/10.1214/16-AOP1168