A four-form flux that couples both to a pseudo-scalar inflaton and to gravity produces a plateau inflaton potential whose spectral index and tensor-to-scalar ratio agree with current CMB data.
The Selfish Higgs and Reheating
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abstract
We consider the cosmological relaxation of the Higgs mass and the cosmological constant due to the four-form fluxes in four dimensions. We present a general class of models with a singlet scalar field containing four-form couplings where the Higgs mass is relaxed to a right value and the Universe reheats to a sufficiently high reheating temperature after the last membrane nucleation. We also discuss some of interesting features in the cases of singlet scalar fields with non-minimal or minimal couplings to gravity and show how the new scalar fields can play a role for dark matter production.
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hep-ph 1years
2019 1verdicts
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Chaotic inflation with four-form couplings
A four-form flux that couples both to a pseudo-scalar inflaton and to gravity produces a plateau inflaton potential whose spectral index and tensor-to-scalar ratio agree with current CMB data.