Primordial black holes in non-minimal Gauss-Bonnet inflation in light of the PTA data

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Here, we investigate the formation of primordial black holes (PBHs) in non-minimal coupling Gauss-Bonnet inflationary model in the presence of power-law potentials.

• We employ a two part coupling function to enhance primordial curvatures at small scales as well as satisfy Planck measurements at the CMB scale.
• Moreover, our model satisfies the swampland criteria.
• We find PBHs with different mass scales and demonstrate that PBHs with masses around $\mathcal{O}(10^{-14})M_{\odot}$ can account for almost all of the dark matter in the universe.