6533b824fe1ef96bd1280087

RESEARCH PRODUCT

Constraints on inflation with an extended neutrino sector

Peter B. DentonGabriela BarenboimIsabel M. Oldengott

subject

PhysicsParticle physicsSpectral index010308 nuclear & particles physicsPhysics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaScalar (mathematics)Parameter space01 natural sciencesCosmologyCosmic neutrino background0103 physical sciencesNeutrino010306 general physics

description

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 (mφ∼MeV), it is possible to relax these constraints, in particular via opening up regions of the parameter space of the spectral index ns. 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.

yearjournalcountryeditionlanguage
2019-01-01
10.1103/physrevd.99.083515http://hdl.handle.net/10261/195127