Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/98305
No new cosmological concordance with massive sterile neutrinos
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
It has been claimed recently that massive sterile neutrinos could bring about a new concordance between observations of the cosmic microwave background, the large-scale structure of the Universe, and local measurements of the Hubble constant, H0. We demonstrate that this apparent concordance results from combining data sets which are in significant tension, even within this extended model, possibly indicating remaining systematic biases in the measurements. We further show that this tension remains when the cosmological model is further extended to include significant tensor modes, as suggested by the recent BICEP2 results. Using the Bayesian evidence, we show that the cold dark matter model with a cosmological constant is strongly favored over its neutrino extensions by various combinations of data sets. Robust data combinations yield stringent limits of ∑mν≲0.3 eV and meffν,sterile≲0.3 eV at 95% C.L. for the sum of active and sterile neutrinos, respectively.
Matèries
Citació
Citació
LEISTEDT, B., PEIRIS, Hiranya v., VERDE, Licia. No new cosmological concordance with massive sterile neutrinos. _Physical Review Letters_. 2014. Vol. 113, núm. 4, pàgs. 041301-1-041301-5. [consulta: 9 de gener de 2026]. ISSN: 0031-9007. [Disponible a: https://hdl.handle.net/2445/98305]