Swampland bounds on dark sectors

Journal of High Energy Physics

Regular Article - Theoretical Physics

Julian B. Muñoz¹  Miguel Montero²  Georges Obied³ 

[1] Center for Astrophysics

[2]  Harvard & Smithsonian, 60 Garden St, 02138, Cambridge, MA, USA;Department of Physics, Harvard University, 02138, Cambridge, MA, USA;Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Parks Road, OX1 3PU, Oxford, UK;

关键词: Effective Field Theories;    Models for Dark Matter;    String Models;   

DOI  :  10.1007/JHEP11(2022)121

 received in 2022-08-29, accepted in 2022-10-29,  发布年份 2022

来源: Springer

【 摘 要 】

We use Swampland principles to theoretically disfavor regions of the parameter space of dark matter and other darkly charged particles that may exist. The Festina Lente bound, the analogue of the Weak-Gravity conjecture in de Sitter, places constraints on the mass and charge of dark particles, which here we show cover regions in parameter space that are currently allowed by observations. As a consequence, a broad set of new ultra-light particles are in the Swampland, independently of their cosmic abundance, showing the complementarity of Quantum Gravity limits with laboratory and astrophysical studies. In parallel, a Swampland bound on the UV cutoff associated to the axion giving a Stückelberg photon its longitudinal mode translates to a new constraint on the kinetic mixings and masses of dark photons. This covers part of the parameter space targeted by upcoming dark-photon direct-detection experiments. Moreover, it puts astrophysically interesting models in the Swampland, including freeze-in dark matter through an ultra-light dark photon, as well as radio models invoked to explain the 21-cm EDGES anomaly.

【 授权许可】

Unknown   
© The Author(s) 2022