Feynman Propagator for a Free Scalar Field on a Causal Set
Journal Article
·
· Physical Review Letters
- Theoretical Physics, Blackett Laboratory, Imperial College London, South Kensington, London, SW7 2AZ (United Kingdom)
The Feynman propagator for a free bosonic scalar field on the discrete spacetime of a causal set is presented. The formalism includes scalar field operators and a vacuum state which define a scalar quantum field theory on a causal set. This work can be viewed as a novel regularization of quantum field theory based on a Lorentz invariant discretization of spacetime.
- OSTI ID:
- 21370791
- Journal Information:
- Physical Review Letters, Vol. 103, Issue 18; Other Information: DOI: 10.1103/PhysRevLett.103.180401; (c) 2009 The American Physical Society; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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