Vacuum decay in CFT and the Riemann-Hilbert problem

Open Access
Authors
Publication date 06-2016
Journal Nuclear Physics B
Volume | Issue number 907
Pages (from-to) 617-632
Number of pages 16
Organisations
  • Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for Theoretical Physics Amsterdam (ITFA)
  • Faculty of Science (FNWI) - Institute of Physics (IoP)
Abstract We study vacuum stability in 1+1 dimensional Conformal Field Theories with external background fields. We show that the vacuum decay rate is given by a non-local two-form. This two-form is a boundary term that must be added to the effective in/out Lagrangian. The two-form is expressed in terms of a Riemann–Hilbert decomposition for background gauge fields, and its novel “functional” version in the gravitational case.
Document type Article
Language English
Published at https://doi.org/10.1016/j.nuclphysb.2016.03.039
Other links https://www.scopus.com/pages/publications/84964402826
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