DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Improving constraints on models addressing the Hubble tension with CMB delensing

Journal Article · · Journal of Cosmology and Astroparticle Physics
 [1];  [2]
  1. Southern Methodist Univ., Dallas, TX (United States); Southern Methodist University
  2. Southern Methodist Univ., Dallas, TX (United States)

The Hubble Tension is a well-known issue in modern cosmology that refers to the apparent disagreement in inferences of the Hubble constant H0 as found through low-redshift observations and those derived from the ΛCDM model utilizing early universe observations. Several extensions to ΛCDM have been proposed to address the Hubble Tension that involve new ingredients or dynamics in the early universe. Reversing the effects of gravitational lensing on cosmic microwave background (CMB) maps produces sharper acoustic peaks in power spectra and allows for tighter constraints on cosmological parameters. We investigate the efficacy of CMB delensing for improving the constraints on parameters used in extensions of the ΛCDM model that are aimed at resolving the Hubble Tension (such as varying fundamental constants, contributions from early dark energy, and self-interacting dark radiation). We use Fisher forecasting to predict the expected constraints with and without this delensing procedure. We demonstrate that CMB delensing improves constraints on H0 by ~ 20% for viable models and significantly improves constraints on parameters across the board in the low-noise regime.

Research Organization:
Southern Methodist Univ., Dallas, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0010129
OSTI ID:
2339503
Journal Information:
Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 10 Vol. 2023; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

References (47)

Weak gravitational lensing of the CMB journal June 2006
The H0 Olympics: A fair ranking of proposed models journal October 2022
Planck 2018 results: VIII. Gravitational lensing journal September 2020
Planck 2018 results: VI. Cosmological parameters journal September 2020
TDCOSMO: IV. Hierarchical time-delay cosmography – joint inference of the Hubble constant and galaxy density profiles journal November 2020
TDCOSMO: V. Strategies for precise and accurate measurements of the Hubble constant with strong lensing journal May 2021
Tdcosmo journal April 2023
Mass Reconstruction with Cosmic Microwave Background Polarization journal August 2002
In the realm of the Hubble tension—a review of solutions * journal July 2021
The Cosmic Linear Anisotropy Solving System (CLASS). Part II: Approximation schemes journal July 2011
Delensing CMB polarization with external datasets journal June 2012
DESI and other Dark Energy experiments in the era of neutrino mass measurements journal May 2014
Phases of new physics in the CMB journal January 2016
CMB delensing beyond the B modes journal December 2017
Interacting dark sector and precision cosmology journal January 2018
The Simons Observatory: science goals and forecasts journal February 2019
The BAO+BBN take on the Hubble tension journal October 2019
Baryon Acoustic Oscillations and the Hubble constant: past, present and future journal October 2019
The benefits of CMB delensing journal April 2022
BAO+BBN revisited — growing the Hubble tension with a 0.7 km/s/Mpc constraint journal November 2022
Improved model-independent constraints on the recombination era and development of a direct projection method journal May 2020
Updated fundamental constant constraints from Planck 2018 data and possible relations to the Hubble tension journal February 2020
Varying fundamental constants principal component analysis: additional hints about the Hubble tension journal October 2021
Using the cosmological recombination radiation to probe early dark energy and fundamental constant variations journal December 2022
New constraints on time-dependent variations of fundamental constants using Planck data journal October 2017
H0LiCOW – XIII. A 2.4 per cent measurement of H0 from lensed quasars: 5.3σ tension between early- and late-Universe probes journal September 2019
Probing cosmic inflation with the LiteBIRD cosmic microwave background polarization survey journal November 2022
Hubble constant hunter’s guide journal February 2020
Oscillating scalar fields and the Hubble tension: A resolution with novel signatures journal March 2020
Early dark energy does not restore cosmological concordance journal August 2020
Early recombination as a solution to the H 0 tension journal April 2021
Dark synergy: Gravitational lensing and the CMB journal December 2001
Analyzing weak lensing of the cosmic microwave background using the likelihood function journal February 2003
Cosmic microwave background lensing reconstruction on the full sky journal April 2003
Reconstruction of lensing from the cosmic microwave background polarization journal October 2003
Signatures of relativistic neutrinos in CMB anisotropy and matter clustering journal April 2004
Non-Gaussian structure of the lensed CMB power spectra covariance matrix journal December 2012
Joint analysis of CMB temperature and lensing-reconstruction power spectra journal September 2013
Towards a cosmological neutrino mass detection journal December 2015
Dark energy at early times, the Hubble parameter, and the string axiverse journal November 2016
Full covariance of CMB and lensing reconstruction power spectra journal February 2017
CMB-S4 Science Book, First Edition report October 2016
Elucidating ΛCDM: Impact of Baryon Acoustic Oscillation Measurements on the Hubble Constant Discrepancy journal January 2018
The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch journal August 2019
A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg 2 of SPTpol Temperature and Polarization Data journal October 2019
Measurements of the Hubble Constant: Tensions in Perspective* journal September 2021
Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with ΛCDM journal February 2021

Similar Records

Improving constraints on inflation with CMB delensing
Journal Article · 2024 · Journal of Cosmology and Astroparticle Physics · OSTI ID:2578781

Early dark sector, the Hubble tension, and the swampland
Journal Article · 2022 · Physical Review. D. · OSTI ID:1902951

The benefits of CMB delensing
Journal Article · 2022 · Journal of Cosmology and Astroparticle Physics · OSTI ID:1903362