Synthetic gravitational waves from a rolling axion monodromy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00617790" target="_blank" >RIV/68378271:_____/21:00617790 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1475-7516/2021/04/040" target="_blank" >https://doi.org/10.1088/1475-7516/2021/04/040</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1475-7516/2021/04/040" target="_blank" >10.1088/1475-7516/2021/04/040</a>
Alternative languages
Result language
angličtina
Original language name
Synthetic gravitational waves from a rolling axion monodromy
Original language description
In string theory inspired models of axion-like fields, sub-leading non-perturbative effects, if sufficiently large, can introduce steep cliffs and gentle plateaus onto the underlying scalar potential. During inflation, the motion of a spectator axion σ on this potential becomes temporarily fast, leading to localized amplification of one helicity state of gauge fields. In this model, the tensor and scalar correlators sourced by the vector fields exhibit localized peak(s) in momentum space corresponding to the modes that exit the horizon while the roll of σ is fast. Thanks to the gravitational coupling of gauge fields with the visible sector and the localized nature of particle production, this model can generate observable gravitational waves (GWs) at CMB scales while satisfying the current limits on scalar perturbations.
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
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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
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
Journal of Cosmology and Astroparticle Physics
ISSN
1475-7516
e-ISSN
1475-7516
Volume of the periodical
2021
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
51
Pages from-to
040
UT code for WoS article
000644501000054
EID of the result in the Scopus database
2-s2.0-85104504624