Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary Prospect 7a, Moscow 117312, Russia
* e-mail: email@example.com 1We should stress here that we work in the small coupling regime and this comparison is legible.
Published online: 31 October 2018
We will breifly review application of Euclidean path integral technique for the study of quantum decay of the bound system in field theory with global U(1)-invariance. As an illustration of the method, we numerically compute the decay rate of metastable Q-ball to the leading semiclassical order and present interpolating formula for the whole region of metastability.
© The Authors, published by EDP Sciences, 2018
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