Small scale structures in coupled scalar field dark matter

• Verfasst von: Beyer, Joschka [VerfasserIn]
• Verfasst von: Wetterich, Christof [VerfasserIn]
• Titel: Small scale structures in coupled scalar field dark matter
• Verf.angabe: J. Beyer, C. Wetterich
• E-Jahr: 2014
• Jahr: 13October2014
• Umfang: 6 S.
• Fussnoten: Gesehen am 11.08.2020
• Titel Quelle: Enthalten in: Physics letters / B
• Ort Quelle: Amsterdam : North-Holland Publ., 1967
• Jahr Quelle: 2014
• Band/Heft Quelle: 738(2014), Seite 418-423
• ISSN Quelle: 1873-2445
• DOI: doi:10.1016/j.physletb.2014.10.012
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1726772918

Abstract

We investigate structure formation for ultra-light scalar field dark matter coupled to quintessence, in particular the cosmon-bolon system. The linear power spectrum is computed by a numerical solution of the coupled field equations. We infer the substructure abundance within a Milky Way-like halo. Estimates of dark halo abundances from recent galaxy surveys imply a lower bound on the bolon mass of about 9 × 10−22 eV. This seems to exclude a possible detection of scalar field dark matter through time variation in pulsar timing signals in the near future.