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  1. Pubblicazioni

Black holes in Sol minore

Articolo
Data di Pubblicazione:
2019
Abstract:
We consider black holes in five-dimensional N = 2 U(1)-gauged supergravity coupled to vector multiplets, with horizons that are homogeneous but not isotropic. We write down the equations of motion for electric and magnetic ansatze, and solve them explicitely for the case of pure gauged supergravity with magnetic U(1) field strength and Sol horizon. The thermodynamics of the resulting solution, which exhibits anisotropic scaling, is discussed. If the horizon is compactified, the geometry approaches asymptotically a torus bundle over AdS(3). Furthermore, we prove a no-go theorem that states the nonexistence of supersymmetric, static, Sol-invariant, electrically or magnetically charged solutions with spatial cross-sections modelled on solvegeometry. Finally, we study the attractor mechanism for extremal static non-BPS black holes with nil- or solvegeometry horizons. It turns out that there are no such attractors for purely electric field strengths, while in the magnetic case there are attractor geometries, where the values of the scalar fields on the horizon are computed by extremization of an effective potential V_eff, which contains the charges as well as the scalar potential of the gauged supergravity theory. The entropy density of the extremal black hole is then given by the value of V_eff in the extremum.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
AdS-CFT Correspondence; Black Holes; Classical Theories of Gravity; Supergravity Models
Elenco autori:
Faedo, F; Farotti, DA; Klemm, S
Link alla scheda completa:
https://iris.unito.it/handle/2318/1933671
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1933671/1191550/Black%20holes%20in%20Sol%20minore.pdf
Pubblicato in:
JOURNAL OF HIGH ENERGY PHYSICS
Journal
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