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Quantum origin of dark energy and the Hubble tension
- Source :
- Modern Physics Letters B, 831, 1. World Scientific Publishing Co. Pte Ltd, Physics Letters
- Publication Year :
- 2022
-
Abstract
- Local measurements of the Hubble parameter obtained from the distance ladder at low redshift are in tension with global values inferred from cosmological standard rulers. A key role in the tension is played by the assumptions on the cosmological history, in particular on the origin of dark energy. Here we consider a scenario where dark energy originates from the amplification of quantum fluctuations of a light field in inflation. We show that spatial correlations inherited from inflationary quantum fluctuations can reduce the Hubble tension down to one standard deviation, thus relieving the problem with respect to the standard cosmological model. Upcoming missions, like Euclid, will be able to test the predictions of models in this class.<br />Comment: v2: version published in Phys. Lett. B; added references, added appendix on evolution of 4-pt functions; 20 pages, 2 figures
- Subjects :
- Nuclear and High Energy Physics
General Relativity and Quantum Cosmology
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
FOS: Physical sciences
Astrophysics::Cosmology and Extragalactic Astrophysics
Physics and Astronomy(all)
83F05
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 02179849
- Database :
- OpenAIRE
- Journal :
- Modern Physics Letters B, 831, 1. World Scientific Publishing Co. Pte Ltd, Physics Letters
- Accession number :
- edsair.doi.dedup.....7f2cef8fbc882dfef7920e4571be5756