Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: α-attractor dark energy in view of next-generation cosmological surveys

Journal Article · · Journal of Cosmology and Astroparticle Physics
 [1];  [2];  [3];  [4]
  1. Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (Spain); Institut de Ciencies del Cosmos (UB-IEEC), Barcelona (Spain); Univ. of California, Berkeley, CA (United States). Berkeley Center for Cosmological Physics; Univ. of Oxford (United Kingdom)
  2. Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (Spain); Institut de Ciencies del Cosmos (UB-IEEC), Barcelona (Spain)
  3. Univ. of Oxford (United Kingdom)
  4. Univ. of California, Berkeley, CA (United States). Berkeley Center for Cosmological Physics; Universite Paris-Saclay, Orsay (France)
+ Show Author Affiliations

The α-attractor inflationary models are nowadays favored by CMB Planck observations. Their similarity with canonical quintessence models motivates the exploration of a common framework that explains both inflation and dark energy. Here, we study the expected constraints that next-generation cosmological experiments will be able to impose for the dark energy α-attractor model. We systematically account for the constraining power of SNIa from WFIRST, BAO from DESI and WFIRST, galaxy clustering and shear from LSST and Stage-4 CMB experiments. We assume a tensor-to-scalar ratio, 10-3 < r < 10-2, which permits to explore the wide regime sufficiently close, but distinct, to a cosmological constant, without need of fine tunning the initial value of the field. We find that the combination S4CMB + LSST + SNIa will achieve the best results, improving the FoM by almost an order of magnitude; respect to the S4CMB + BAO + SNIa case. We find this is also true for the FoM of the w0-wa parameters. Therefore, future surveys will be uniquely able to probe models connecting early and late cosmic acceleration.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
European Social Fund (ESF); Ministry of Industry, Science and Innovation of Spain; Science and Technology Facilities Council (STFC) (United Kingdom); USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1581073
Journal Information:
Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 07 Vol. 2019; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

References (63)

Second-order scalar-tensor field equations in a four-dimensional space journal September 1974
A new type of isotropic cosmological models without singularity journal March 1980
Fourth-order gravity as general relativity plus matter journal September 1984
Reconstructing a f ( R ) theory from the α-Attractors journal September 2017
The effects of galaxy formation on the matter power spectrum: A challenge for precision cosmology text January 2011
Second-order scalar-tensor field equations in a four-dimensional space journal September 1974
Dark energy as a remnant of inflation and electroweak symmetry breaking journal January 2019
The Polarbear-2 and the Simons Array Experiments journal January 2016
A new type of isotropic cosmological models without singularity journal March 1980
Fourth-order gravity as general relativity plus matter journal September 1984
The premature recollapse problem in closed inflationary universes journal January 1988
Inflation physics from the cosmic microwave background and large scale structure journal March 2015
Weak gravitational lensing of the CMB journal June 2006
Planck 2013 results. XVI. Cosmological parameters journal October 2014
Planck 2015 results : XIV. Dark energy and modified gravity journal September 2016
The Analysis of Counts of the Extragalactic Nebulae in Terms of a Fluctuating Density Field. journal January 1953
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant journal September 1998
Measurements of Ω and Λ from 42 High‐Redshift Supernovae journal June 1999
Color Separation of Galaxy Types in the Sloan Digital Sky Survey Imaging Data journal October 2001
Mass Reconstruction with Cosmic Microwave Background Polarization journal August 2002
Galaxy Clustering and Galaxy Bias in a ΛCDM Universe journal January 2004
The DEEP2 Galaxy Redshift Survey: Color and Luminosity Dependence of Galaxy Clustering at \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $z\sim 1$ \end{document} journal January 2008
Effects of Baryons and Dissipation on the Matter Power Spectrum journal January 2008
Ultra-Large-Scale Cosmology in Next-Generation Experiments with Single Tracers journal November 2015
NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE ( WMAP ) OBSERVATIONS: COSMOLOGICAL PARAMETER RESULTS journal September 2013
The Cosmic Linear Anisotropy Solving System (CLASS). Part II: Approximation schemes journal July 2011
Universality class in conformal inflation journal July 2013
DESI and other Dark Energy experiments in the era of neutrino mass measurements journal May 2014
Precision epoch of reionization studies with next-generation CMB experiments journal August 2014
Quintessential inflation with α-attractors journal June 2017
Sourcing dark matter and dark energy from α-attractors journal June 2017
hi_class: Horndeski in the Cosmic Linear Anisotropy Solving System journal August 2017
Reconstructing a f ( R ) theory from the α-Attractors journal September 2017
Dark energy, α-attractors, and large-scale structure surveys journal June 2018
New tracker models of dark energy journal August 2018
Dark energy from α-attractors: phenomenology and observational constraints journal August 2018
An analytic model for the spatial clustering of dark matter haloes journal September 1996
The impact of baryonic processes on the two-point correlation functions of galaxies, subhaloes and matter journal April 2014
Baryons, neutrinos, feedback and weak gravitational lensing journal April 2015
Perturbative approach to covariance matrix of the matter power spectrum journal December 2016
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample journal March 2017
The effect of baryons on redshift space distortions and cosmic density and velocity fields in the EAGLE simulation journal April 2016
Inflation as a transient attractor in R 2 cosmology journal February 1988
Quintessence’s last stand? journal March 2015
Dark energy from α -attractors journal June 2015
Constraining ultralarge-scale cosmology with multiple tracers in optical and radio surveys journal September 2015
Limits of quasistatic approximation in modified-gravity cosmologies journal October 2015
Inflationary α -attractors from F ( R ) gravity journal December 2016
Impact of relativistic effects on cosmological parameter estimation journal January 2018
Higgs-dilaton cosmology: An inflation–dark-energy connection and forecasts for future galaxy surveys journal February 2018
Instant preheating in quintessential inflation with α -attractors journal March 2018
Scale-invariant alternatives to general relativity. III. The inflation-dark energy connection journal March 2019
Extracting Primordial Non-Gaussianity without Cosmic Variance journal January 2009
Unity of Cosmological Inflation Attractors journal April 2015
Improved Constraints on Cosmology and Foregrounds from BICEP2 and Keck Array Cosmic Microwave Background Data with Inclusion of 95 GHz Band journal January 2016
Exploring the Expansion History of the Universe journal March 2003
The effects of galaxy formation on the matter power spectrum: a challenge for precision cosmology: Galaxy formation and the matter power spectrum journal July 2011
SPT-3G: a next-generation cosmic microwave background polarization experiment on the South Pole telescope conference July 2014
Accelerating Universes with Scaling dark Matter journal April 2001
Observational constraints on the generalized α attractor model journal April 2018
Type Ia Supernova Distances at Redshift >1.5 from the Hubble Space Telescope Multi-cycle Treasury Programs: The Early Expansion Rate journal January 2018
Simulations of the WFIRST Supernova Survey and Forecasts of Cosmological Constraints journal October 2018
First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters journal February 2019

Similar Records

Testing α -attractor quintessential inflation against CMB and low-redshift data
Journal Article · 2024 · Physics of the Dark Universe · OSTI ID:2479979
+1 more
Dark energy from α-attractors: phenomenology and observational constraints
Journal Article · 2018 · Journal of Cosmology and Astroparticle Physics · OSTI ID:1542391
+1 more
Quintessential inflation with α-attractors
Journal Article · 2017 · Journal of Cosmology and Astroparticle Physics · OSTI ID:22676158

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS