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Article

H0 Tensions in Cosmology and Axion Pseudocycles in the Stringy Universe

ELI-NP, Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului St, 077125 Bucharest, Romania
Academic Editor: Arman Shafieloo
Universe 2022, 8(10), 500; https://doi.org/10.3390/universe8100500
Received: 9 May 2022 / Revised: 6 September 2022 / Accepted: 8 September 2022 / Published: 22 September 2022
(This article belongs to the Section Cosmology)
The tension between early and late H0 is revised in the context of axion dark matter arising naturally from string theoretical integrations of antisymmetric tensor fields over non-trivial cycles. Certain early universe cycles may appear non-trivial from the perspective of a homology analysis focused on the early universe, while they may become trivial when analysed from the perspective of a homology theory reaching out to lower energies and later times. Such phenomena can introduce variations in the axion potential that would explain the observed H0 tension. The decay of such pseudo-axions when the pseudo-cycles dissipate trigger axion-two-photon (otherwise having an extremely long lifetime) and axion-gravitational processes mediated by Chern–Simons couplings with observable electromagnetic or gravitational wave signals originating in the early universe. View Full-Text
Keywords: H0 tension; cosmological axions; stringy axions H0 tension; cosmological axions; stringy axions
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MDPI and ACS Style

Patrascu, A.T. H0 Tensions in Cosmology and Axion Pseudocycles in the Stringy Universe. Universe 2022, 8, 500. https://doi.org/10.3390/universe8100500

AMA Style

Patrascu AT. H0 Tensions in Cosmology and Axion Pseudocycles in the Stringy Universe. Universe. 2022; 8(10):500. https://doi.org/10.3390/universe8100500

Chicago/Turabian Style

Patrascu, Andrei T. 2022. "H0 Tensions in Cosmology and Axion Pseudocycles in the Stringy Universe" Universe 8, no. 10: 500. https://doi.org/10.3390/universe8100500

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