Abstract
Constraints on inflationary models typically assume only the standard models of cosmology and particle physics. By extending the neutrino sector to include a new interaction with a light scalar mediator (), it is possible to relax these constraints, in particular via opening up regions of the parameter space of the spectral index . These new interactions can be probed at IceCube via interactions of astrophysical neutrinos with the cosmic neutrino background for nearly all of the relevant parameter space.
- Received 11 March 2019
DOI:https://doi.org/10.1103/PhysRevD.99.083515
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