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Is the cosmological "constant" a nonlocal quantum residue of discreteness of the causal set type?

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arxiv 0710.1675 v1 pith:CCRLLCLN submitted 2007-10-09 gr-qc astro-phhep-th

Rafael D. Sorkin (Perimeter Institute , Syracuse University) This is my paper · ORCID
classification gr-qcastro-phhep-th
keywords causalcosmologicalpredictionacceleratingappearsbeenconcreteconfirmed
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The evidence for an accelerating Hubble expansion appears to have confirmed the heuristic prediction, from causal set theory, of a fluctuating and ``ever-present'' cosmological term in the Einstein equations. A more concrete phenomenological model incorporating this prediction has been devised and tested, but it remains incomplete. I will review these developments and also mention a possible consequence for the dimensionality of spacetime.

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  1. The old problem of the cosmological constant solved?

    gr-qc 2025-05 reject novelty 4.0 of 10

    A speculative essay claims that a model of gravity as superluminal phonons on a ring lattice solves the cosmological constant problem, but provides no derivation of the values or dynamics.

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