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Review

Scalar Induced Gravitational Waves Review

INFN Sezione di Padova, I-35131 Padova, Italy
Academic Editor: Cristiano Germani
Universe 2021, 7(11), 398; https://doi.org/10.3390/universe7110398
Received: 13 September 2021 / Revised: 16 October 2021 / Accepted: 19 October 2021 / Published: 21 October 2021
(This article belongs to the Special Issue Primordial Black Holes from Inflation)
We provide a review on the state-of-the-art of gravitational waves induced by primordial fluctuations, so-called induced gravitational waves. We present the intuitive physics behind induced gravitational waves and we revisit and unify the general analytical formulation. We then present general formulas in a compact form, ready to be applied. This review places emphasis on the open possibility that the primordial universe experienced a different expansion history than the often assumed radiation dominated cosmology. We hope that anyone interested in the topic will become aware of current advances in the cosmology of induced gravitational waves, as well as becoming familiar with the calculations behind. View Full-Text
Keywords: induced gravitational waves; primordial black holes; early universe; inflation induced gravitational waves; primordial black holes; early universe; inflation
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MDPI and ACS Style

Domenech, G. Scalar Induced Gravitational Waves Review. Universe 2021, 7, 398. https://doi.org/10.3390/universe7110398

AMA Style

Domenech G. Scalar Induced Gravitational Waves Review. Universe. 2021; 7(11):398. https://doi.org/10.3390/universe7110398

Chicago/Turabian Style

Domenech, Guillem. 2021. "Scalar Induced Gravitational Waves Review" Universe 7, no. 11: 398. https://doi.org/10.3390/universe7110398

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