from 30 November 2017 to 3 December 2017 (Europe/Warsaw)
University of Warsaw
Europe/Warsaw timezone
Boltzmann equation for relativistic species and Hot Dark Matter
Presented by Paweł SZCZERBIAK
on
2 Dec 2017
from
14:30
to
14:45
Session:
parallel session 1
Content
The latest Planck CMB data seem to strongly constrain the Hot Dark Matter scenarios, although they stay in tension with direct Hubble constant measurements. However, one can believe that in near future the experimental uncertainly for the effective number of neutrino species N_{eff} will shrink vastly. Therefore, in order to estimate the allowed parameter space of models predicting a Hot Dark Matter component, it is crucial to calculate its relic density with high accuracy. In my talk I will exploit the Boltzmann equation in the form suitable for relativistic species in Weinberg’s Higgs portal model. I will also discuss how in similar scenarios different statistics of incoming/outgoing particles my influence the results.
Place
Location: Faculty of Physics
Room: Lecture Hall 0.06