The Feynman iϵ prescription displaces poles or tilts an integration contour by an infinitesimal imaginary part. It selects vacuum boundary conditions and damps oscillatory integrals at infinite time.
Ancestors (7)
Incoming links (38)
- Four-point tree amplitude in phi cubed theory
- Gaussian generating functional for a Dirac field
- Harmonic oscillator transition kernel
- Inversion of the gauge-fixed Maxwell kinetic operator
- Mostly-plus Dirac propagator with a real derivative kernel
- One-loop ghost kinetic counterterm in Feynman gauge
- Operator-path-integral equivalence
- Past exam of the mathematics course of the University of Cambridge / 2002 / iii / Paper 62 / 1 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2002 / iii / Paper 62 / 4 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2003 / iii / Paper 44 / 1 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2006 / iii / Paper 48 / 2 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2006 / iii / Paper 49 / 1 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2006 / iii / Paper 49 / 2 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2007 / iii / Paper 50 / 2 / b / Solution
- Past exam of the mathematics course of the University of Cambridge / 2007 / iii / Paper 50 / 3 / d / Solution
- Past exam of the mathematics course of the University of Cambridge / 2007 / iii / Paper 51 / 1 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2007 / iii / Paper 51 / 3 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2008 / iii / Paper 48 / 2 / a / Solution
- Past exam of the mathematics course of the University of Cambridge / 2008 / iii / Paper 51 / 1 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2009 / iii / Paper 48 / 4 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2010 / iii / Paper 46 / 4 / i / Solution
- Past exam of the mathematics course of the University of Cambridge / 2012 / iii / Paper 50 / 1 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2013 / iii / Paper 44 / 1 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2014 / iii / Paper 40 / 1 / vi / Solution
- Past exam of the mathematics course of the University of Cambridge / 2014 / iii / Paper 40 / 3 / iii / Solution
- Past exam of the mathematics course of the University of Cambridge / 2015 / iii / Paper 43 / 1 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2016 / iii / Paper 301 / 1 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2016 / iii / Paper 301 / 3 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2016 / iii / Paper 301 / 4 / Solution
- Past exam of the mathematics course of the University of Cambridge / 2017 / iii / Paper 301 / 4 / c / Solution
- Past exam of the mathematics course of the University of Cambridge / 2018 / iii / Paper 301 / 1 / ii / Solution
- Past exam of the mathematics course of the University of Cambridge / 2018 / iii / Paper 301 / 3 / ii / Solution
- Past exam of the mathematics course of the University of Cambridge / 2021 / iii / Paper 301 / 4 / a / Solution
- Positive-sign covariant gauge-fixing inverse
- Scalar Feynman propagator pole prescription
- Scalar triangle Feynman integral
- Transverse and longitudinal momentum projectors
- Vacuum projection by imaginary time
Synonyms (1)
Discussion (0)
New discussionThere are no discussions about this article yet.
Articles by others on the same topic (0)
There are currently no matching articles.