Inflation models in the light of self-interacting sterile neutrinos

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dc.contributor.author Mazumdar, Arindam
dc.contributor.author Mohanty, Subhendra
dc.contributor.author Parashari, Priyank
dc.date.accessioned 2019-12-07T11:19:22Z
dc.date.available 2019-12-07T11:19:22Z
dc.date.issued 2019-11
dc.identifier.citation Mazumdar, Arindam ; Mohanty, Subhendra and Parashari, Priyank, "Inflation models in the light of self-interacting sterile neutrinos", arXiv, Cornell University Library, DOI: arXiv:1911.08512, Nov. 2019. en_US
dc.identifier.uri http://arxiv.org/abs/1911.08512
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/5014
dc.description.abstract Short baseline neutrino experiments, like LSND and MiniBooNE experiments, pointed towards the existence of eV mass scale sterile neutrinos. To reconcile sterile neutrinos with cosmology self interaction between sterile neutrinos has been studied. We analysed Planck cosmic microwave background (CMB) data with self-interacting sterile neutrino (SI?) and study their impact on inflation models. The fit to the CMB data in SI? model is as good as the fit to ?CDM model. We find that the spectral index (ns) values shift to 0.9375�0.0058 in SI? model. This has significant impact on the validity of different inflation models. For example the Starobinsky and quartic hilltop model, which were allowed within ?CDM cosmology, are ruled out. On the other hand some models like natural and Coleman-Weinberg inflation are now favoured. Therefore, the existence of self interacting sterile neutrinos with eV order of mass will play an important role in the selection of correct inflation model.
dc.description.statementofresponsibility by Arindam Mazumdar, Subhendra Mohanty and Priyank Parashari
dc.language.iso en_US en_US
dc.publisher Cornell University Library en_US
dc.subject Cosmology en_US
dc.subject Nongalactic Astrophysics (astro-ph.CO) en_US
dc.subject High Energy Physics - Phenomenology (hep-ph) en_US
dc.title Inflation models in the light of self-interacting sterile neutrinos en_US
dc.type Pre-Print en_US
dc.relation.journal arXiv


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