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.
Original language | English (US) |
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Pages (from-to) | 617-632 |
Number of pages | 16 |
Journal | Nuclear Physics B |
Volume | 907 |
DOIs | |
State | Published - Jun 1 2016 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics