A local reconstruction framework maps Φ(R,φ,X) theories to f(R,ℛ) hybrid gravity in the Einstein frame, with the inverse mapping non-unique and parametrized by kinetic coupling.
Berti, et al., Class
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Simulations demonstrate that a retrograde IMBH with mass ratio ~0.67 to the disc mass fragments a stellar disc into inner, misaligned, and outer components within 10-20 Myr.
Non-minimal effective scalar-tensor gravity supports early-universe bounce, inflation, and genesis while producing two Hubble values that could resolve the Hubble tension.
This review summarizes tidal Love numbers and dissipation effects for black holes, neutron stars, and exotic objects, noting vanishing static bosonic Love numbers for black holes in GR but nonzero values for fermions and exotic objects, with implications for gravitational-wave astronomy.
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Reconstruction Between Generalized Hybrid Metric--Palatini Gravity and $\Phi(R,\phi,X)$ Theories
A local reconstruction framework maps Φ(R,φ,X) theories to f(R,ℛ) hybrid gravity in the Einstein frame, with the inverse mapping non-unique and parametrized by kinetic coupling.
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Non-minimal Effective Scalar-Tensor Gravity in the Early Universe
Non-minimal effective scalar-tensor gravity supports early-universe bounce, inflation, and genesis while producing two Hubble values that could resolve the Hubble tension.
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Tidal Response of Compact Objects
This review summarizes tidal Love numbers and dissipation effects for black holes, neutron stars, and exotic objects, noting vanishing static bosonic Love numbers for black holes in GR but nonzero values for fermions and exotic objects, with implications for gravitational-wave astronomy.