Inflection-Point B−L Higgs Inflation

Show simple item record Okada, Nobuchika 2019-05-15T18:00:56Z 2019-05-15T18:00:56Z 2017 2017-02-28
dc.identifier.citation Okada, N., Raut, D. (2017): Inflection-Point B-L Higgs Inflation. Physical Review D, 95(3). DOI: en_US
dc.identifier.issn 2470-0010
dc.description.abstract Inflection-point inflation is an interesting possibility to realize a successful slow-roll inflation when inflation is driven by a single scalar field with its initial value below the Planck mass (ϕₗ≲Mₚₗ). In order for a renormalization group (RG) improved effective λϕ⁴ potential to develop an inflection point, the quartic coupling λ(ϕ) must exhibit a minimum with an almost vanishing value in its RG evolution, namely λ(ϕₗ)≃0 and βλ(ϕₗ)≃0, where βλ is the beta function of the quartic coupling. As an example, we consider the minimal gauged B−L extended Standard Model at the TeV scale, where we identify the B−L Higgs field as the inflaton field. For a successful inflection-point inflation, which is consistent with the current cosmological observations, the mass ratios among the Z′ gauge boson, the right-handed neutrinos and the B−L Higgs boson are fixed. Our scenario can be tested in the future collider experiments such as the high-luminosity LHC and the SHiP experiments. In addition, the inflection-point inflation provides a unique prediction for the running of the spectral index α ≃ −2.7 × 10⁻³(60/N)² (N is the e-folding number), which can be tested in the near future. en_US
dc.format.mimetype application/pdf en_US
dc.language English en_US
dc.publisher American Physical Society en_US
dc.subject Inflation en_US
dc.subject Particles and fields en_US
dc.subject Cosmology en_US
dc.title Inflection-Point B−L Higgs Inflation en_US
dc.type text en_US
dc.rights.holder American Physical Society en_US

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