Parity violating non-Gaussianity from axion-gauge field dynamics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00554707" target="_blank" >RIV/68378271:_____/21:00554707 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.104.123523" target="_blank" >https://doi.org/10.1103/PhysRevD.104.123523</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.104.123523" target="_blank" >10.1103/PhysRevD.104.123523</a>
Alternative languages
Result language
angličtina
Original language name
Parity violating non-Gaussianity from axion-gauge field dynamics
Original language description
We study scalar-tensor-tensor and tensor-scalar-scalar three-point cross-correlations generated by the dynamics of a transiently rolling spectator axion-U(1) gauge field model during inflation. In this framework, tensor and scalar fluctuations are sourced by gauge fields at the nonlinear level due to gravitational interactions, providing a chiral background of gravitational waves while keeping the level of scalar fluctuations at the observationally viable levels at cosmic microwave background (CMB) scales. We show that the gravitational couplings between the observable sector and gauge fields can also mediate strong correlations between scalar and tensor fluctuations, generating an amplitude for the mixed-type three-point functions that is parametrically larger-f(NL) similar or equal to O(110)(r/0.00)(3/2)-compared to the single-field realizations of inflation.
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
—
OECD FORD branch
10303 - Particles and field physics
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
2021
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
2470-0029
Volume of the periodical
104
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
22
Pages from-to
123523
UT code for WoS article
000734362700010
EID of the result in the Scopus database
2-s2.0-85122347507