Linder, Eric V.2017-08-242017-08-242017-03-21Linder, Eric V. (2017) Λ is Coming: Parametrizing Freezing Fields. International conference "ECL17: Exploring the Energetic Universe 2017", Nazarbayev University Energetic Cosmic Laboratoryhttp://arxiv.org/abs/1701.01445v2http://nur.nu.edu.kz/handle/123456789/2547We explore freezing dark energy, where the evolution of the field approaches that of a cosmological constant at late times. We propose two general, two parameter forms to describe the class of freezing field models, in analogy to ones for thawing fields, here based on the physics of the flow parameter or the calibrated w–w′ phase space. Observables such as distances and Hubble parameters are fit to within 0.1%, and the dark energy equation of state generally to within better than 1%, of the exact numerical solutions.enAttribution-NonCommercial-ShareAlike 3.0 United Statesfreezing fieldsdark energycosmologyHubble parameterResearch Subject Categories::NATURAL SCIENCES::Physics::Astronomy and astrophysics::CosmologyArticle