Breakdown of Chiral Perturbation Theory for the Axion Hot Dark Matter Bound
| Autor: | Di Luzio, Luca, Martinelli, Guido, Piazza, Gioacchino |
|---|---|
| Přispěvatelé: | Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
Particle physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Chiral perturbation theory Physics::Instrumentation and Detectors High Energy Physics::Lattice chiral [perturbation theory] FOS: Physical sciences General Physics and Astronomy 01 natural sciences dark matter High Energy Physics - Phenomenology (hep-ph) effective field theory High Energy Physics - Lattice 0103 physical sciences Effective field theory ddc:530 ddc:796 expansion: chiral 010306 general physics Axion Physics [PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat] Hot dark matter High Energy Physics - Lattice (hep-lat) High Energy Physics::Phenomenology lattice field theory higher-order: 1 Order (ring theory) perturbation theory: chiral Lattice QCD mass [axion] Automatic Keywords High Energy Physics - Phenomenology chiral [expansion] Thermalisation [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] Elementary Particles and Fields axion: mass [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] 1 [higher-order] Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Physical Review Letters Physical Review Letters, American Physical Society, 2021, 126 (24), pp.241801. ⟨10.1103/PhysRevLett.126.241801⟩ Physical review letters 126(24), 241801 (2021). doi:10.1103/PhysRevLett.126.241801 |
| ISSN: | 1079-7114 0031-9007 0038-5506 0044-0027 |
| DOI: | 10.1103/physrevlett.126.241801 |
| Popis: | Physical review letters 126(24), 241801 (2021). doi:10.1103/PhysRevLett.126.241801 We show that the commonly adopted hot dark matter bound on the axion mass ma≲1 eV is not reliable, since it is obtained by extrapolating the chiral expansion in a region where the effective field theory breaks down. This is explicitly shown via the calculation of the axion-pion thermalization rate at the next-to-leading order in chiral perturbation theory. We finally advocate a strategy for a sound extraction of the axion hot dark matter bound via lattice QCD techniques. Published by APS, College Park, Md. |
| Databáze: | OpenAIRE |
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