An effective constrained scalar-Gauss-Bonnet inflation model yields n_s ≃ 0.958 and r ≃ 2.7×10^{-4} while the exact theory has no propagating scalar degree of freedom.
Rectifying Einstein-Gauss-Bonnet Inflation in View of GW170817
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The paper reviews cosmological tensions including the H0 and S8 discrepancies and explores new physics models that could explain them.
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Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
The paper reviews cosmological tensions including the H0 and S8 discrepancies and explores new physics models that could explain them.
- Constraining Quintessential Inflation with ACT: A Gauss-Bonnet Gateway