Dark-energy equation of state: how far can we go from Λ?
classification
🌌 astro-ph
keywords
equationstateconstantcosmologicalproblemaroundaspectsboundary
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The equation of state of dark energy is investigated to determine how much it may deviate from the equation of state of the cosmological constant (CC). Two aspects of the problem are studied: the "expansion" around the vacuum equation of state and the problem of the crossing of the cosmological constant boundary.
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