Understanding the Nature of Scalar-Induced Gravitational Waves

Published 29 Sep 2025 in gr-qc and astro-ph.CO | (2509.24774v1)

Abstract: We offer a physical interpretation of the origin of the scalar-induced gravitational wave background, showing that it is mainly produced around the peaks of the scalar perturbations. We also provide a compact expression to estimate the amount of scalar-induced gravitational waves generated by peaks.

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