2 papers
astro-ph.CO2026
Sound Speed Resonance in the Gravitational Wave Background as a probe for non-standard early universe cosmologies
Igor de O. C. Pedreira, Amara Ilyas, Ziwei Wang +2
Gravitational waves constitute a powerful probe of the underlying theory of gravity. In extensions of general relativity, additional degrees of freedom, such as scalar fields in th…
gr-qc2026
Imprints of Dark Photons on Gravitational Wave Polarizations
Kimihiro Nomura, Jiro Soda, Kazushige Ueda +1
We study conversion processes between gravitons and dark photons and reveal the effects of dark photons on the polarization of gravitational waves. Considering cosmological dark ma…