Observable Gravity Waves From U(1)_B-L Higgs and Coleman-Weinberg Inflation

2013/11/04 by Nobuchika Okada, Qaisar Shafi, Okada, Nobuchika +1 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #Geophysics and Gravity Measurements #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.1311.0921

4 pages, 4 figures

arxiv created 2013/11/04 · openalex publication_date 2013/11/04 · arxiv updated 2013/11/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a realistic non-supersymmetric inflation model based on a gauged U(1)_B-L symmetry and a tree-level Higgs potential. The inflaton is identified with the scalar field which spontaneously breaks U(1)_B-L, and we include radiative corrections à la Coleman-Weinberg in the inflaton potential. If the scalar spectral index n_s lies close to 0.96, as indicated by the recent Planck and WMAP 9-yr measurements, the tensor-to-scalar ratio r, a canonical measure for gravity waves, exceeds 0.01. Thus, according to this model, gravity waves should be found in the near future. In this case, the quantity |dn_s/d ln k| lies in the range 0.004-0.005. Successful baryogenesis can be realized in this class of models either via thermal or non-thermal leptogenesis.

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