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Causal sets as discrete spacetime

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Abstract:

Causal set theory is an approach to the problem of quantum gravity in which spacetime is fundamentally discrete and in which causality is a primary concept. The concrete kinematics of the approach makes it relatively straightforward to build phenomenological models that produce observable effects of the underlying discreteness. An example is a model of a massive free particle moving on a causal set background which gives rise to a Lorentz invariant diffusion in the particle's momentum, a novel and potentially fruitful effect.

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/17445760500356833

Affiliations: Blackett Laboratory, Imperial College, London, SW7 2AZ, UK

Publication date: January 1, 2006

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tandf/tcph/2006/00000047/00000001/art00001
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