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astro-ph.CO2025
A universal scaling law for gravitational waves induced during inflation
Martin Teuscher, Ruth Durrer, Killian Martineau +1
We consider the stochastic gravitational wave background induced by arbitrary source fields that are amplified during cosmological inflation. The associated tensor spectral index i…
astro-ph.CO2025★ 4 cited
Gravitational Waves sourced by Gauge Fields during Inflation
Martin Teuscher, Ruth Durrer, Killian Martineau +1
We study the inflationary gravitational wave background induced by Abelian gauge fields generated by non-minimal kinetic and axial couplings to the inflaton. We show that, up to sl…