A new model emphasizing secondary mass features and pairing transitions improves spectral siren H0 constraints by ~30% using 142 GW events from GWTC-4.0.
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Scalar-field reconstruction of Ricci-Gauss-Bonnet dark energy in Hořava-Lifshitz cosmology produces an equation of state that transitions smoothly to de Sitter-like behavior at late times, with stable sound speed and non-negative total entropy change at the apparent horizon.
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Secondary-Mass Features improve Spectral-Siren $H_0$ Constraints
A new model emphasizing secondary mass features and pairing transitions improves spectral siren H0 constraints by ~30% using 142 GW events from GWTC-4.0.
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Scalar-Field Reconstruction of Ricci--Gauss--Bonnet Dark Energy in Ho\v{r}ava--Lifshitz Cosmology
Scalar-field reconstruction of Ricci-Gauss-Bonnet dark energy in Hořava-Lifshitz cosmology produces an equation of state that transitions smoothly to de Sitter-like behavior at late times, with stable sound speed and non-negative total entropy change at the apparent horizon.