  Recently it was discovered that the Standard Model vacuum may suffer an
essential metastability near the Planck scale. In this regard it makes sense to
study in more detail the decay processes of the metastable vacuum and to
develop methods for their more accurate analysis. In this article we develop a
technique to calculate two loop radiative corrections to false vacuum decay
rate in thin-wall approximation and apply it to false vacuum decay in scalar
quantum field theory with cubic and quartic interactions. The results obtained
use dimensional regularization and given in two different renormalization
schemes: Coleman-Weinberg and $\overline{MS}$.
