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SS19 – Abstract
Bjoern Garbrecht
(Technische Universität München)
23.5.2019
Systematic expansion of tunneling rates (PRETALK for students at 15:30 h)
I will review the theory of tunneling in quantum mechanics and field theory to one-loop order. Then, I will address how to systematically go beyond this approximation in an expansion based on Green's functions. One phenomenological relevance of this is that a consistent calculation of the tunneling rate in the Standard Model and beyond requires a one-loop resummation. Finally, the standard Euclideanized calculation of tunneling rates is related to a derivation based on real-time amplitudes.
