Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorDelgado, Jorge F.
dc.contributor.authorHerdeiro, Carlos A.
dc.contributor.authorRadu, Eugenpt
dc.contributor.authorRúnarsson, Helgipt
dc.description.abstractWe construct electrically charged Kerr black holes (BHs) with scalar hair. Firstly, we take an uncharged scalar field, interacting with the electromagnetic field only indirectly, via the background metric. The corresponding family of solutions, dubbed Kerr–Newman BHs with ungauged scalar hair, reduces to (a sub-family of) Kerr–Newman BHs in the limit of vanishing scalar hair and to uncharged rotating boson stars in the limit of vanishing horizon. It adds one extra parameter to the uncharged solutions: the total electric charge. This leading electromagnetic multipole moment is unaffected by the scalar hair and can be computed by using Gauss's law on any closed 2-surface surrounding (a spatial section of) the event horizon. By contrast, the first sub-leading electromagnetic multipole – the magnetic dipole moment –, gets suppressed by the scalar hair, such that the gyromagnetic ratio is always smaller than the Kerr–Newman value (g=2g=2). Secondly, we consider a gauged scalar field and obtain a family of Kerr–Newman BHs with gauged scalar hair. The electrically charged scalar field now stores a part of the total electric charge, which can only be computed by applying Gauss' law at spatial infinity and introduces a new solitonic limit – electrically charged rotating boson stars. In both cases, we analyze some physical properties of the
dc.relationFCT/IF - PD/BD/109532/2015pt
dc.relationH2020-MSCA-RISE-2015 Grant No. StronGrHEP-690904pt
dc.relationFCT/CIDMA - UID/MAT/04106/2013pt
dc.titleKerr–Newman black holes with scalar hairpt
degois.publication.titlePhysics Letters Bpt
Appears in Collections:CIDMA - Artigos
DFis - Artigos
GGDG - Artigos

Files in This Item:
File Description SizeFormat 
PLB761(2016)234.pdf540.19 kBAdobe PDFView/Open

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.