Generalized Hilltop Inflation

Antonio Racioppi; Helena Grete Lillepalu

Generalized Hilltop Inflation

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arxiv 2211.02426 v2 pith:KMFSHBDQ submitted 2022-11-04 astro-ph.CO gr-qchep-ph

Helena Grete Lillepalu , Antonio Racioppi This is my paper · ORCID

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keywords hilltopgeneralizedinflationpowerscalestudiedvaluesagreement

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abstract

We study a generalized version of hilltop inflation where the standard hilltop potential has been raised to a power and we allow fractional numbers for both the original hilltop power ($m$) and the overall exponent ($n$). In the parameter space studied, agreement with the latest experimental constraints favors high values for $m$ and low values for $n$. Finally, we also find that in all the configurations studied, the inflationary scale always sits around the grand unification scale.

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Symmetry-breaking inflation in non-minimal metric-affine gravity
gr-qc 2024-12 conditional novelty 5.0 of 10

A Holst-invariant coupling to the inflaton makes symmetry-breaking inflation viable, including the previously unattainable sub-Planckian vacuum expectation value case.

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