2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/177771I show that an application of renormalization group arguments may lead to significant corrections to the vacuum decay rate for phase transitions in flat and curved space-time. It can also give some information regarding its dependence on the parameters of the theory, including the cosmological constant in the case of decay in curved space-time.10 pages, LaTeX, various comments and references addedHigh Energy Physics - Phenomenologytext