26-30 July 2021
Zoom
Europe/Berlin timezone

Self-interacting neutrinos as a solution(?) to the Hubble tension

28 Jul 2021, 10:50
20m
Zoom

Zoom

Parallel session talk Cosmology T02: Cosmology

Speaker

Anirban Das (SLAC National Accelerator Laboratory)

Description

Self-interaction among the neutrinos in the early Universe has been proposed as a solution to the Hubble tension, a discrepancy between the measured values of the Hubble constant from CMB and low-redshift data. However, flavor-universal neutrino self-interaction is highly constrained by BBN and several laboratory experiments such as, tau and K-meson decay, double-neutrino beta decay etc. In this talk, I will discuss about the cosmology if only one or two neutrino states are self-interacting. Such flavor-specific interactions are less constrained by the laboratory experiments. Finally, I will talk about the feasibility of addressing the Hubble tension in the framework of such flavor-specific neutrino self-interaction.

Collaboration / Activity Theory
First author Anirban Das
Email anirband@slac.stanford.edu

Primary author

Anirban Das (SLAC National Accelerator Laboratory)

Presentation Materials