Exact collapse solutions in D = 4, N $$ \mathcal{N} $$ = 4 gauged supergravity and their generalizations

Lü, H.; Zhang, Xuefeng

doi:10.1007/jhep07(2014)099

Cited by 18 publications

(28 citation statements)

References 30 publications

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“…Some of these solutions can be promoted to become dynamical ones where the static black holes are the end points of the time evolution [19,20]. Further such exact dynamical solutions were later constructed in [22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Static and dynamic charged black holes

2019

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We consider a class of Einstein-Maxwell-dilaton theories in general dimensions and construct both static and dynamic charged black holes. We adopt the reverse engineering procedure and make a specific ansatz for the scalar field and then derive the necessary scalar potential and the non-minimal coupling function between the scalar and the Maxwell field. The resulting static black holes contain mass and electric charge as integration constants. We find that some of the static solutions can be promoted to become dynamical ones in the Eddington-Finkelstein-like coordinates. The collapse solutions describe the evolution from a smaller charged black hole to a larger black hole state, driven by the scalar field.

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Section: Introductionmentioning

confidence: 99%

Static and dynamic charged black holes

2019

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“…There are large classes of scalar hairy black holes having been constructed in Einstein gravity either minimally or non-minimally coupled to a scalar field [2][3][4][5][15][16][17][18][19][20]. More interestingly, some of these theories even admit exact dynamical black holes solutions with scalar hair [20][21][22][23][24][25][26]. The solutions provide explicit and analytical examples for the formation of scalar hairy black holes.…”

Section: Introductionmentioning

confidence: 99%

Global structure of exact scalar hairy dynamical black holes

Fan

Chen

Lü

2016

J. High Energ. Phys.

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We study the global structure of some exact scalar hairy dynamical black holes which were constructed in Einstein gravity either minimally or non-minimally coupled to a scalar field. We find that both the apparent horizon and the local event horizon (measured in luminosity coordinate) monotonically increase with the advanced time as well as the Vaidya mass. At late advanced times, the apparent horizon approaches the event horizon and gradually becomes future outer. Correspondingly, the space-time arrives at stationary black hole states with the relaxation time inversely proportional to the 1/(n−1) power of the final black hole mass, where n is the space-time dimension. These results strongly support the solutions describing the formation of black holes with scalar hair. We also obtain new charged dynamical solutions in the non-minimal theory by introducing an Maxwell field which is non-minimally coupled to the scalar. The presence of the electric charge strongly modifies the dynamical evolution of the space-time.

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“…The first has α(u) = 0, giving rise to the singlecharged version of exact black hole formation obtained in [9]. For non-vanishing α, we find that…”

Section: Static Charged C-metricsmentioning

confidence: 66%

“…An exact time-dependent solution has been found that describes gravitational collapse to a static scalar-hairy black hole in fourdimensional Einstein gravity minimally coupled to a dilaton with a supergravity-inspired scalar potential [8]. In addition, an exact collapse solution has been constructed in D = 4, N = 4 gauged supergravity for which the gauge fields of the U (1) × U (1) subgroup of SO (4) carry independent conserved charges [9].…”

Section: Introductionmentioning

confidence: 99%

DynamicCmetrics in gauged supergravities

Lü

Vázquez-Poritz

2015

Phys. Rev. D

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We construct an exact time-dependent charged dilaton C-metric in four-dimensional N = 4 gauged supergravity. The scalar field drives the time evolution by transferring energy to the black holes, thereby causing their masses to increase and their acceleration to decrease. The values of the electric/magnetic and scalar charges determine three regions of potential time evolution. This solution holographically describes a strongly-coupled threedimensional conformal field theory on the background of an evolving black hole. We also find new static charged dilaton C-metrics, which arise in four-dimensional Einstein-Maxwelldilaton theories whose scalar potential can be expressed in terms of a superpotential.

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Exact collapse solutions in D = 4, N $$ \mathcal{N} $$ = 4 gauged supergravity and their generalizations

Cited by 18 publications

References 30 publications

Static and dynamic charged black holes

Static and dynamic charged black holes

Global structure of exact scalar hairy dynamical black holes

DynamicCmetrics in gauged supergravities

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