Published June 9, 2014
| Version v1
Journal article
Manifest causality in quantum field theory with sources and detectors
- 1. Consortium for Fundamental Physics, School of Physics & Astronomy,University of Manchester. Manchester M13 9PL. (United Kingdom)
- 2. Institute for Particle Physics Phenomenology, Durham University,Durham DH1 3LE. (United Kingdom)
- 3. School of Physics & Astronomy, University of Manchester,Manchester M13 9PL. (United Kingdom)
Description
We introduce a way to compute scattering amplitudes in quantum field theory including the effects of particle production and detection. Our amplitudes are manifestly causal, by which we mean that the source and detector are always linked by a connected chain of retarded propagators. We show how these amplitudes can be derived from a path integral, using the Schwinger-Keldysh "in-in" formalism. Focussing on ϕ3 theory, we confirm that our approach agrees with the standard S-matrix approach in the case of positive energy plane-wave scattering
Availability note (English)
Available from http://dx.doi.org/10.1007/JHEP06(2014)049; Available from http://repo.scoap3.org/record/2769Additional details
Identifiers
- URL
- https://repo.scoap3.org/record/2769;
- DOI
- 10.1007/JHEP06(2014)049;
- arXiv
- arXiv:1312.3871v3;
Publishing Information
- Journal Title
- Journal of High Energy Physics (Online)
- Journal Volume
- 2014
- Journal Issue
- 06
- Journal Page Range
- p. 49
- ISSN
- 1029-8479
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 48016763
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- CAUSALITY; PARTICLE PRODUCTION; PATH INTEGRALS; PROPAGATOR; QUANTUM FIELD THEORY; S MATRIX; SCATTERING AMPLITUDES; WAVE PROPAGATION
- Descriptors DEC
- AMPLITUDES; FIELD THEORIES; INTEGRALS; MATRICES
Optional Information
- Copyright
- Copyright (c) OPEN ACCESS, © The Authors
- Notes
- PUBLISHER-ID: JHEP06(2014)049; OAI: oai:repo.scoap3.org:2769
- Funding organization
- SCOAP3, CERN, Geneva (Switzerland)