Observable Gravity Waves From U(1)_${B-L}$ Higgs and Coleman-Weinberg Inflation

Understand

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 \`a 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.