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arXiv · 1007.1672

WIMP Dark Matter Inflation with Observable Gravity Waves

Nobuchika Okada·Qaisar Shafi
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Abstract

We present a successful inflation model based on $λϕ^4$ potential in which a Standard Model (SM) singlet inflaton $ϕ$, with mass of around a TeV or less, also plays the role of a weakly interacting scalar dark matter particle (WIMP). The WIMP relic abundance generated after inflation is in accord with the current observations. The spectral index $n_s$ lies within the WMAP 1-$σ$ bounds, while the Planck satellite may observe the tensor-to-scalar ratio, a canonical measure of gravity waves, which we estimate lies between 0.003 and 0.007.An unbroken $Z_2$ parity ensures that the scalar WIMP is absolutely stable.

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Nobuchika Okada, Qaisar Shafi. 2010-07-18. WIMP Dark Matter Inflation with Observable Gravity Waves. https://doi.org/10.1103/physrevd.84.043533

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