We show that the monopole scalar charge of black holes in Einstein-Maxwell-dilaton theory is proportional to the electric potential at the event horizon, with a proportionality factor given by (minus) the scalar coupling constant. We also show that the scalar charge, in the weak electric charge limit, does not depend on the black hole spin. This result can be very useful to circumvent spin degeneracy issues when testing the theory against gravitational waves observations.
Scalar charge of black holes in Einstein-Maxwell-dilaton theory / Pacilio, Costantino. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 98:6(2018). [10.1103/PhysRevD.98.064055]
Scalar charge of black holes in Einstein-Maxwell-dilaton theory
Pacilio, Costantino
2018
Abstract
We show that the monopole scalar charge of black holes in Einstein-Maxwell-dilaton theory is proportional to the electric potential at the event horizon, with a proportionality factor given by (minus) the scalar coupling constant. We also show that the scalar charge, in the weak electric charge limit, does not depend on the black hole spin. This result can be very useful to circumvent spin degeneracy issues when testing the theory against gravitational waves observations.File | Dimensione | Formato | |
---|---|---|---|
Pacilio_Scalar charge_2018.pdf
solo gestori archivio
Tipologia:
Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
164.16 kB
Formato
Adobe PDF
|
164.16 kB | Adobe PDF | Contatta l'autore |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.