%0 Journal Article
%T Semiclassical calculation of decay rates
%A Bessa
%A A.
%A de Carvalho
%A C. A. A.
%A Fraga
%A E. S.
%J High Energy Physics - Phenomenology
%D 2008
%I 
%R 10.1016/j.nuclphysa.2009.01.057
%X Several relevant aspects of quantum-field processes can be well described by semiclassical methods. In particular, the knowledge of non-trivial classical solutions of the field equations, and the thermal and quantum fluctuations around them, provide non-perturbative information about the theory. In this work, we discuss the calculation of the one-loop effective action from the semiclasssical viewpoint. We intend to use this formalism to obtain an accurate expression for the decay rate of non-static metastable states.
%U http://arxiv.org/abs/0810.2713