Speaker
Mr
Juan S. Cruz
(TUM)
Description
Following previous work on self-consistent methods geared towards dealing with false vacuum decay in quantum field theory; a $U(1)$-gauge theory with a complex scalar is considered together with a polynomial potential which presents a metastable vacuum at tree level. Fluctuations around an inhomogeneous bounce-type background interpolating between vacua are studied and computed within a 1-PI effective action treatment and through a self-consistent prescription in order to incorporate gradients of the background. The self-consistent methodology also includes renormalization of the theory: coupling counterterms in a MS-like scheme and the wave-function renormalization obtained through a gradient expansion methodology. Corrections to the life-time of the metastable vacuum comprise: leading order contribution from the action at the tree-level bounce, plus self-energy corrections, counterterm contributions and corrections to the bounce background.
Primary author
Mr
Juan S. Cruz
(TUM)
Co-authors
Prof.
Björn Garbrecht
(Technical Univerisity Munich)
Dr
Carlos Tamarit
(Technische Universität München)
Dr
Wen-Yuan Ai
(Technical University Munich)
