WIMP Dark Matter Inflation with Observable Gravity Waves

Details WIMP Dark Matter Inflation with Observable Gravity Waves WIMP Dark Matter Inflation with Observable Gravity Waves

2010-07-09

arxiv.org/abs/1007.1672v2

Phys.Rev.D84:043533,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, Note Added which includes a brief discussion of two previous works on the same model considered in our pap

Scientific paper

10.1103/PhysRevD.84.043533

We present a successful inflation model based on $\lambda \phi^4$ potential in which a Standard Model (SM) singlet inflaton $\phi$, 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-$\sigma$ 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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