Probing Gauss-Bonnet-corrected inflation with gravitational waves

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Probing Gauss-Bonnet-corrected inflation with gravitational waves

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Probing Gauss-Bonnet-corrected inflation with gravitational waves

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10100 - Mathematics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS

ISSN

1475-7516

e-ISSN

—

Svazek periodika

2024

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

1-20

Kód UT WoS článku

001296044200007

EID výsledku v databázi Scopus

2-s2.0-85193805969