Discreteness and the transmission of light from distant sources
arXiv:1009.3058 · doi:10.1103/PhysRevD.82.104048
Abstract
We model the classical transmission of a massless scalar field from a source to a detector on a background causal set. The predictions do not differ significantly from those of the continuum. Thus, introducing an intrinsic inexactitude to lengths and durations - or more specifically, replacing the Lorentzian manifold with an underlying discrete structure - need not disrupt the usual dynamics of propagation.
16 pages, 1 figure. Version 2: reference added
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