Feynman Propagator for a Free Scalar Field on a Causal Set
arXiv:0909.0944 · doi:10.1103/PhysRevLett.103.180401
Abstract
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 regularisation of quantum field theory based on a Lorentz invariant discretisation of spacetime.
4 pages, 2 plots. Minor updates to match published version
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Cited by in corpus (57)
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