2020/01/29 by Elena Massara, Francisco Villaescusa-Navarro, Shirley Ho +2 · 110 citations
Mathematics · Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Constraint (computer-aided design) #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark matter #Galaxies: Formation, Evolution, Phenomena #Geometry #Mathematics #Matter power spectrum #Neutrino #Particle physics #Physics #Quantum mechanics #Sigma #Signature (topology) #Spectral density #Spectrum (functional analysis) #Statistics #astro-ph.CO
paper · pdf · doi:10.1103/physrevlett.126.011301
published in Physical Review Letters 126(1), 011301 (American Physical Society) · 5 pages, 3 figures
arxiv created 2020/01/29 · openalex publication_date 2021/01/06 · arxiv updated 2021/01/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Cosmological neutrinos have their greatest influence in voids: These are the regions with the highest neutrino to dark matter density ratios. The marked power spectrum can be used to emphasize low-density regions over high-density regions and, therefore, is potentially much more sensitive than the power spectrum to the effects of neutrino masses. Using 22 000 N-body simulations from the Quijote suite, we quantify the information content in the marked power spectrum of the matter field and show that it outperforms the standard power spectrum by setting constraints improved by a factor larger than 2 on all cosmological parameters. The combination of marked and standard power spectra allows us to place a 4.3σ constraint on the minimum sum of the neutrino masses with a volume equal to 1 (Gpc h-1)3 and without cosmic microwave background priors. Combinations of different marked power spectra yield a 6σ constraint within the same conditions.