Probing Gauss-Bonnet-corrected inflation with gravitational waves

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00382991" target="_blank" >RIV/68407700:21340/24:00382991 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1475-7516/2024/05/069" target="_blank" >https://doi.org/10.1088/1475-7516/2024/05/069</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1475-7516/2024/05/069" target="_blank" >10.1088/1475-7516/2024/05/069</a>

Result language
angličtina
Original language name
Probing Gauss-Bonnet-corrected inflation with gravitational waves
Original language description
The low energy effective action of quantum gravity may include the higher curvature terms such as the Gauss-Bonnet term. The inflaton dynamics may be affected by the Gauss-Bonnet term if there is an inflaton-Gauss-Bonnet coupling. We show that an inflation model with a simple power law potential is made viable if it is coupled to the Gauss-Bonnet term since the prediction on the scalar spectral index and the tensor-to- scalar ratio are modified. We further point out that such a model predicts huge amount of gravitational waves at the high frequency range around 100 GHz-100 THz through the perturbative inflaton decay into gravitons induced by the Gauss-Bonnet term. Thus the spectrum of high frequency gravitational background is a unique feature of the inflation models with a Gauss-Bonnet correction.
Czech name
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Czech description
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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
10100 - Mathematics

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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