2015/02/28 by Oscar Castillo-Felisola, Cristobal Corral, Cristóbal Corral +4 · 43 citations
Physics and Astronomy · #Axion #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Meson #Particle physics #Phenomenology (philosophy) #Philosophy #Physics #Planck #Pseudoscalar #Quantum mechanics #Strong CP problem #Theoretical physics #Torsion (gastropod) #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.91.085017
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 91(8) (American Physical Society) · 7 pages, no figures, comments and references added, published version
openalex publication_date 2015/04/10 · arxiv created 2015/04/13 · arxiv updated 2015/04/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study a scenario allowing a solution of the strong charge parity problem via the Peccei-Quinn mechanism, implemented in gravity with torsion. In this framework there appears a torsion-related pseudoscalar field known as the Kalb-Ramond axion. We compare it with the so-called Barbero-Immirzi axion recently proposed in the literature also in the context of the gravity with torsion. We show that they are equivalent from the viewpoint of the effective theory. The phenomenology of these torsion-descended axions is completely determined by the Planck scale without any additional model parameters. These axions are very light and very weakly interacting with ordinary matter. We briefly comment on their astrophysical and cosmological implications in view of the recent BICEP2 and Planck data.