Internet Archive Scholar

Non-standard neutrino cosmology dilutes the lensing anomaly [article]

Ivan Esteban, Olga Mena, Jordi Salvado
2022

Preserved Fulltext

fulltext thumbnail
Web Archive Capture PDF (2.0 MB)
https://web.archive.org/web/20220211044404/http://arxiv.org/pdf/2202.04656.pdf

A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL. The file type is application/pdf.

Despite the impressive success of the standard cosmological model, several anomalies defy its triumph. Among them is the so-called lensing anomaly: the Planck satellite observes stronger CMB gravitational lensing than expected. The role of neutrinos in this anomaly has been mostly overlooked, despite their key role in CMB lensing, because in the standard scenario they tend to increase the tension. Here, we show that this strongly depends on the assumed neutrino equation of state. We demonstrate
more » ... that if neutrinos have yet undiscovered long-range interactions, the lensing pattern is significantly affected, rendering the lensing anomaly as a pure statistical fluctuation. Our results thus open up a window to link anomalous CMB lensing with present and future cosmological, astrophysical, and laboratory measurements of neutrino properties.
doi:10.48550/arxiv.2202.04656 fatcat:hbug5iq6mjfk3aq5eanajzxfcy
Citation

Ivan Esteban, Olga Mena, Jordi Salvado. "Non-standard neutrino cosmology dilutes the lensing anomaly." (2022)