arXiv (OAI Expanded)
open access
Spectral Fingerprints Beyond Degeneracies in Primordial Gravitational-Wave Sources
Stochastic gravitational-wave backgrounds from different primordial mechanisms can exhibit identical peak frequencies and amplitudes, leaving their origin degenerate. We show that this degeneracy can be broken by the broadband spectral response of the gravitational-wave source. By comparing scalar-i
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