Imprints of primordial non-Gaussianity on gravitational wave spectrum
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00519706" target="_blank" >RIV/68378271:_____/19:00519706 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/physrevd.99.041301" target="_blank" >https://doi.org/10.1103/physrevd.99.041301</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.99.041301" target="_blank" >10.1103/PhysRevD.99.041301</a>
Alternative languages
Result language
angličtina
Original language name
Imprints of primordial non-Gaussianity on gravitational wave spectrum
Original language description
Although cosmic microwave background and large scale structure probe the largest scales of our Universe with ever-increasing precision, our knowledge about the smaller scales is still very limited other than the bounds on primordial black holes (PBHs). We show that the statistical properties of the small scale quantum fluctuations can be probed via the stochastic gravitational wave (GW) background, which is induced as the scalar modes reenter the horizon. We found that even if scalar curvature fluctuations have a subdominant non-Gaussian component, these non-Gaussian perturbations can source a dominant portion of the induced GWs. Moreover, the GWs sourced by non-Gaussian scalar fluctuations peak at a higher frequency and this can result in distinctive observational signatures.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/EF15_003%2F0000437" target="_blank" >EF15_003/0000437: Cosmology, Gravity and the Dark Sector of the Universe</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
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Volume of the periodical
99
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
1-7
UT code for WoS article
000458139000001
EID of the result in the Scopus database
2-s2.0-85062345436