Quadratic curvature corrections to stringy effective actions and the absence of de Sitter vacua

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00567196" target="_blank" >RIV/68378271:_____/22:00567196 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0338474" target="_blank" >https://hdl.handle.net/11104/0338474</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP02(2022)012" target="_blank" >10.1007/JHEP02(2022)012</a>

Result language
angličtina
Original language name
Quadratic curvature corrections to stringy effective actions and the absence of de Sitter vacua
Original language description
We investigate the combined effect of fluxes and higher-order curvature corrections, in the form of the Gauss-Bonnet term, on the existence of de Sitter vacua in a heterotic string inspired framework, compactified on spheres and tori. We first gain some intuition on the effects of these corrections by studying a perturbative expansion in the small Gauss-Bonnet coupling. Then, for choices of potential closer to the string theory predictions, we show that the inclusion of quadratic curvature corrections actually reduces the parametric likelihood of de Sitter solutions.
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
10303 - Particles and field physics

Project
<a href="/en/project/GJ20-16531Y" target="_blank" >GJ20-16531Y: Implications of non-standard particle and gravitational models for cosmology.</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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