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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Charged scalar-tensor solitons and black holes with (approximate) Anti-de Sitter asymptotics

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Author(s):
Brihaye, Yves [1] ; Hartmann, Betti [2]
Total Authors: 2
Affiliation:
[1] Univ Mons Hainaut, Phys Math, Pl Parc 1, B-7000 Mons - Belgium
[2] Univ Sao Paulo, Inst Fis Sao Carlos IFSC, Ave Trabalhador Sao Carlense 400, CP 369, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of High Energy Physics; n. 1 JAN 16 2019.
Web of Science Citations: 0
Abstract

We discuss charged and static solutions in a shift-symmetric scalar-tensor gravity model including a negative cosmological constant. The solutions are only approximately Anti-de Sitter (AdS) asymptotically. While spherically symmetric black holes with scalar-tensor hair do exist in our model, the uncharged spherically symmetric scalar-tensor solitons constructed recently cannot be generalised to include charge. We point out that this is due to the divergence of the electric monopole at the origin of the coordinate system, while higher order multipoles are well-behaved. We also demonstrate that black holes with scalar hair exist only for horizon value larger than that of the corresponding extremal Reissner-Nordstrom-AdS (RNAdS) solution, i.e. that we cannot construct solutions with arbitrarily small horizon radius. We demonstrate that for fixed Q a horizon radius exists at which the specific heat C-Q diverges signalling a transition from thermodynamically unstable to stable black holes. In contrast to the RNAdS case, however, we have only been able to construct a stable phase of large horizon black holes, while a stable phase of small horizon black holes does not (seem to) exist. (AU)

FAPESP's process: 16/12605-2 - (in)stability and excitation of modes in (asymptotically) anti-de Sitter space-times with view to the AdS/CFT correspondence
Grantee:Betti Hartmann
Support type: Regular Research Grants