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arXiv · 1102.4747

Non-Minimal B-L Inflation with Observable Gravity Waves

Nobuchika Okada·Mansoor Ur Rehman·Qaisar Shafi
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Abstract

We consider non-minimal \lambda \phi^4 inflation in a gauged non-supersymmetric U(1)_{B-L} model containing the gravitational coupling \xi \mathcal{R} \Phi^\dagger \Phi, where \mathcal{R} denotes the Ricci scalar and the standard model singlet inflaton field \Phi spontaneously breaks the U(1)_{B-L} symmetry. Including radiative corrections, the predictions 0.956 < n_s < 0.984 and 0.007 < r < 0.1 for the scalar spectral index and tensor to scalar ratio r lie within the current WMAP 1-\sigma bounds. If the B-L symmetry breaking scale is of order a TeV or so, one of the three right handed neutrinos is a plausible cold dark matter candidate. Bounds on the dimensionless parameters \lambda, \xi and the gauge coupling g_{B-L} are obtained.

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Nobuchika Okada, Mansoor Ur Rehman, Qaisar Shafi. 2011-02-23. Non-Minimal B-L Inflation with Observable Gravity Waves. https://doi.org/10.1016/j.physletb.2011.06.044

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