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gr-qc2025
General SIGW source for reheating dynamics
M. Laine, S. Procacci
Working in an arbitrary gauge, we derive the source term for scalar-induced gravitational waves (SIGW) valid during a general reheating epoch. The dominant energy component is allo…
hep-ph2025★ 4 cited
Evolution of coupled scalar perturbations through smooth reheating. II. Thermal fluctuation regime
M. Laine, S. Procacci, A. Rogelj
Curvature perturbations with short wavelengths exit the Hubble horizon when the universe may contain a thermal plasma in addition to an inflaton field that drives its expansion. We…