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arxiv: 1210.2589 · v3 · submitted 2012-10-09 · 🌀 gr-qc · astro-ph.CO· hep-th

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Everpresent Lambda - II: Structural Stability

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classification 🌀 gr-qc astro-ph.COhep-th
keywords fluctuatingsometermtimealthoughanalysisbeguncausal
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Ideas from causal set theory lead to a fluctuating, time dependent cosmological-constant of the right order of magnitude to match currently quoted "dark energy" values. Although such a term was predicted some time ago, a more detailed analysis of the resulting class of phenomenological models was begun only recently (based on numerical simulation of the cosmological equations with such a fluctuating term). In this paper we continue the investigation by studying the sensitivity of the scheme to some of the ad hoc choices made in setting it up.

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