Arya, R and Jain, RK and Mishra, AK (2024) Primordial black holes dark matter and secondary gravitational waves from warm Higgs-G inflation. In: Journal of Cosmology and Astroparticle Physics, 2024 (2).
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Abstract
We explore the role of dissipative effects during warm inflation leading to the small-scale enhancement of the power spectrum of curvature perturbations. In this paper, we specifically focus on non-canonical warm inflationary scenarios and study a model of warm Higgs-G inflation, in which the Standard Model Higgs boson drives inflation, with a Galileon-like non-linear kinetic term. We show that in the Galileon-dominated regime, the primordial power spectrum is strongly enhanced, leading to the formation of primordial black holes (PBH) with a wide range of the mass spectrum. Interestingly, PBHs in the asteroid mass window � (1017-1023) g are generated in this model, which can explain the total abundance of dark matter in the Universe. In our analysis, we also calculate the secondary gravitational waves (GW) sourced by these small-scale overdense fluctuations and find that the induced GW spectrum can be detected in future GW detectors, such as LISA, BBO, DECIGO, etc. Our scenario thus provides a novel way of generating PBHs as dark matter and a detectable stochastic GW background from warm inflation. We also show that our scenario is consistent with the swampland and the trans-Planckian censorship conjectures and, thus, remains in the viable landscape of UV complete theories. © 2024 IOP Publishing Ltd and Sissa Medialab.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Cosmology and Astroparticle Physics |
| Publisher: | Institute of Physics |
| Additional Information: | The copyright for this article belongs to Authors. |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 05 Apr 2024 09:22 |
| Last Modified: | 05 Apr 2024 09:22 |
| URI: | https://eprints.iisc.ac.in/id/eprint/84706 |
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