Foamy dark matter from monodromies

• Verfasst von: Berges, Jürgen [VerfasserIn]
• Verfasst von: Chatrchyan, Aleksandr [VerfasserIn]
• Verfasst von: Jaeckel, Joerg [VerfasserIn]
• Titel: Foamy dark matter from monodromies
• Verf.angabe: Jürgen Berges, Aleksandr Chatrchyan, Joerg Jaeckel
• E-Jahr: 2019
• Jahr: 19 August 2019
• Umfang: 25 S.
• Fussnoten: Gesehen am 08.11.2019
• Titel Quelle: Enthalten in: Journal of cosmology and astroparticle physics
• Ort Quelle: London : IOP, 2003
• Jahr Quelle: 2019
• Band/Heft Quelle: (2019), 8, Artikel-ID 020, Seite 1-25
• ISSN Quelle: 1475-7516
• DOI: doi:10.1088/1475-7516/2019/08/020
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1681541998

Abstract

We investigate the dynamics of axion-like particle (ALP) dark matter where the field range is enlarged by a monodromy. The monodromy potential allows sufficient production of dark matter also at larger couplings to the Standard Model particles. The potential typically features a number of “wiggles” that lead to a rapid growth of fluctuations. Using classical-statistical field theory simulations we go beyond the linear regime and treat the system in the non-linear and even non-perturbative regime. For sufficiently strong wiggles the initially homogeneous field is completely converted into fluctuations. The fluctuations correspond to dark matter particles with a non-vanishing velocity and we consider the corresponding restrictions from structure formation as well as the effects on today's dark matter density.