Tensions between direct measurements of the lens power spectrum from Planck data
Open accessAbstract
We apply a recently developed method to directly measure the gravitational lensing power spectrum from CMB power spectra to the Planck satellite data. This method allows us to analyze the tension between the temperature power spectrum and lens reconstruction in a model-independent way. Even when allowing for arbitrary variations in the lensing power spectrum, the tension remains at the $2.4\ensuremath{\sigma}$ level. By separating the lensing and unlensed high redshift information in the CMB power spectra, we also show that under $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ the two are in tension at a similar level, whereas the unlensed information is consistent with lensing reconstruction. These anomalies are driven by the smoother acoustic peaks relative to $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ at $\ensuremath{\ell}\ensuremath{\sim}1250--1500$. Both tensions relax slightly when polarization data are considered. This technique also isolates the one combination of the lensing power spectrum multipoles that the Planck CMB power spectra currently constrain and can be straightforwardly generalized to future data when CMB power spectra constrain multiple aspects of lensing which are themselves correlated with lensing reconstruction.
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Recent work confirms some tension between Planck temperature and polarization data versus Planck CMB lensing data.
“It is worth noting though that recent work confirms some tension between Planck temperature and polarization data versus Planck CMB Lensing data (Motloch and Hu 2018).”
From Testing general relativity in cosmology (2019) · cites this paper as Motloch and Hu 2018
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- Authors
- Motloch, P., & Hu, W.
- Affiliations
- University of Chicago (US)
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 2018-05-30
- Volume
- 97
- Issue
- 10
- ISSN
- 2470-0010 (ISSN-L)
- 2470-0029
- OpenAlex
- W2795195616
- Cited by
- 46
- References
- 44
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 4 · 2023: 6 · 2022: 7 · 2021: 4 · 2020: 11 · 2019: 5 · 2018: 4
- FWCI
- 3.22
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Licence
- Locations
- Physical review. D/Physical review. D. (publishedVersion)
- arXiv (Cornell University) (publishedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Aeronautics and Space Administration (ATP NNX15AK22G)
- University of Chicago
- National Science Foundation (NSF PHY-1125897)
- Kavli Foundation
- U.S. Department of Energy (DE-FG02-13ER41958)
- Simons Foundation
- Government of Canada
- Province of Ontario
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Dark Matter and Cosmic Phenomena
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Keywords
- CMB temperature power spectrum, Planck satellite data, LambdaCDM model, CMB polarization
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