Λ Is coming

Parametrizing freezing fields

Eric V. Linder

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We 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.

Original languageEnglish
Pages (from-to)11-14
Number of pages4
JournalAstroparticle Physics
Volume91
DOIs
Publication statusPublished - May 1 2017
Externally publishedYes

Fingerprint

freezing
dark energy
equations of state
melting
physics

Keywords

  • Cosmological constant
  • Cosmological distances
  • Dark energy

ASJC Scopus subject areas

  • Astronomy and Astrophysics

Cite this

Λ Is coming : Parametrizing freezing fields. / Linder, Eric V.

In: Astroparticle Physics, Vol. 91, 01.05.2017, p. 11-14.

Research output: Contribution to journalArticle

Linder, Eric V. / Λ Is coming : Parametrizing freezing fields. In: Astroparticle Physics. 2017 ; Vol. 91. pp. 11-14.
@article{75063bbb531c43b48d9dd16a13cb41cf,
title = "Λ Is coming: Parametrizing freezing fields",
abstract = "We 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.",
keywords = "Cosmological constant, Cosmological distances, Dark energy",
author = "Linder, {Eric V.}",
year = "2017",
month = "5",
day = "1",
doi = "10.1016/j.astropartphys.2017.02.008",
language = "English",
volume = "91",
pages = "11--14",
journal = "Astroparticle Physics",
issn = "0927-6505",
publisher = "Elsevier",

}

TY - JOUR

T1 - Λ Is coming

T2 - Parametrizing freezing fields

AU - Linder, Eric V.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - We 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.

AB - We 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.

KW - Cosmological constant

KW - Cosmological distances

KW - Dark energy

UR - http://www.scopus.com/inward/record.url?scp=85015440692&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85015440692&partnerID=8YFLogxK

U2 - 10.1016/j.astropartphys.2017.02.008

DO - 10.1016/j.astropartphys.2017.02.008

M3 - Article

VL - 91

SP - 11

EP - 14

JO - Astroparticle Physics

JF - Astroparticle Physics

SN - 0927-6505

ER -