In regularized 4D Einstein-Gauss-Bonnet gravity, positive values of the Gauss-Bonnet coupling increase neutron star and hybrid star maximum masses, while negative values lower them, allowing astrophysical mass and radius observations to constrain the coupling.
Marquez, Betania C
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Impact of hyperons on structural properties of neutron stars and hybrid stars within the regularized four-dimensional Einstein-Gauss-Bonnet gravity
In regularized 4D Einstein-Gauss-Bonnet gravity, positive values of the Gauss-Bonnet coupling increase neutron star and hybrid star maximum masses, while negative values lower them, allowing astrophysical mass and radius observations to constrain the coupling.