Journal
PHYSICAL REVIEW D
Volume 101, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.043019
Keywords
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Funding
- NSFC [11690021, 11975019, 11947302, 11991053]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB23000000, XDA15020701]
- Key Research Program of Frontier Sciences, CAS [ZDBS-LY-7009]
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We analytically calculate the scalar induced gravitational waves (SIGWs) and find a log-dependent slope of SIGW in the infrared regions (f < f(c)), namely n(GW)(f) = 3 - 2/ln(f(c)/f), and nGW(f) = 2 - 2/ln(f(c)/f) near the peak if the power spectrum of scalar curvature perturbation is quite narrow, where f(c) is roughly the peak frequency. Such a log-dependent slope can be taken as a new template for distinguishing SIGW from other sources.
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