An application of the renormalization group to the calculation of the   vacuum decay rate in flat and curved space-time
  I 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. 
D. Metaxas