Explaining large electromagnetic logarithms from loops of inflationary gravitons

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00575984" target="_blank" >RIV/68378271:_____/23:00575984 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0348538" target="_blank" >https://hdl.handle.net/11104/0348538</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP08(2023)195" target="_blank" >10.1007/JHEP08(2023)195</a>

Result language
angličtina
Original language name
Explaining large electromagnetic logarithms from loops of inflationary gravitons
Original language description
Recent progress on nonlinear sigma models on de Sitter background has permitted the resummation of large inflationary logarithms by combining a variant of Starobinsky’s stochastic formalism with a variant of the renormalization group. We reconsider single graviton loop corrections to the photon wave function, and to the Coulomb potential, in light of these developments. Neither of the two 1-loop results have a stochastic explanation, however, the flow of a curvature-dependent field strength renormalization explains their factors of ln(a). We speculate that the factor of ln(Hr) in the Coulomb potential should not be considered as a leading logarithm effect.
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
—
OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/EH22_010%2F0002906" target="_blank" >EH22_010/0002906: MSCA Fellowship CZ FZU I</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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