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arxiv: astro-ph/0004075 · v2 · pith:ST5EQHRLnew · submitted 2000-04-06 · 🌌 astro-ph · gr-qc· hep-ph· hep-th

The Cosmological Constant

classification 🌌 astro-ph gr-qchep-phhep-th
keywords constantcosmologicalcosmologyphysicsconstraintsdevelopmentsenergyfocusing
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This is a review of the physics and cosmology of the cosmological constant. Focusing on recent developments, I present a pedagogical overview of cosmology in the presence of a cosmological constant, observational constraints on its magnitude, and the physics of a small (and potentially nonzero) vacuum energy.

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