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astro-ph.CO2026
Consistency between cosmological and standard siren observations in evolving dark energy
Macarena Lagos, William J. Wolf
A scalar field non-minimally coupled to gravity can be the driver of cosmic acceleration. Such a non-minimal coupling (NMC) can produce a non-zero gravitational-wave (GW) friction…
gr-qc2026
Gravitational Wave Birefringence in generalized Palatini Chern Simons
Jose Perdiguero, Macarena Lagos
The cosmological propagation of gravitational waves (GWs) can exhibit amplitude and phase polarization distortions when parity symmetry is broken, a phenomenon known as cosmologica…